| Base | Representation |
|---|---|
| bin | 111000111011000010… |
| … | …0110000010011101101 |
| 3 | 102200112010012112202011 |
| 4 | 1301312010300103231 |
| 5 | 4000321422322341 |
| 6 | 132053432201221 |
| 7 | 11555136133513 |
| oct | 1616604602355 |
| 9 | 380463175664 |
| 10 | 122240042221 |
| 11 | 47929353a90 |
| 12 | 1b835b39211 |
| 13 | b6b12c883b |
| 14 | 5cb8a484b3 |
| 15 | 32a6981b81 |
| hex | 1c761304ed |
122240042221 has 4 divisors (see below), whose sum is σ = 133352773344. Its totient is φ = 111127311100.
The previous prime is 122240042209. The next prime is 122240042233.
122240042221 is nontrivially palindromic in base 10.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is an interprime number because it is at equal distance from previous prime (122240042209) and next prime (122240042233).
It is a cyclic number.
It is not a de Polignac number, because 122240042221 - 29 = 122240041709 is a prime.
It is a super-2 number, since 2×1222400422212 (a number of 23 digits) contains 22 as substring.
It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 122240042192 and 122240042201.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (122240042621) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556365545 + ... + 5556365566.
It is an arithmetic number, because the mean of its divisors is an integer number (33338193336).
Almost surely, 2122240042221 is an apocalyptic number.
122240042221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
122240042221 is a deficient number, since it is larger than the sum of its proper divisors (11112731123).
122240042221 is a wasteful number, since it uses less digits than its factorization.
122240042221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11112731122.
The product of its (nonzero) digits is 1024, while the sum is 22.
It can be divided in two parts, 1222400 and 42221, that added together give a palindrome (1264621).
The spelling of 122240042221 in words is "one hundred twenty-two billion, two hundred forty million, forty-two thousand, two hundred twenty-one".
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