Base | Representation |
---|---|
bin | 11010011111010… |
… | …10110000110001 |
3 | 120111010111100112 |
4 | 31033222300301 |
5 | 423341223441 |
6 | 34014431105 |
7 | 5335522556 |
oct | 1517526061 |
9 | 514114315 |
10 | 222211121 |
11 | 104483560 |
12 | 62502495 |
13 | 37062c92 |
14 | 21724a2d |
15 | 147954eb |
hex | d3eac31 |
222211121 has 8 divisors (see below), whose sum is σ = 245481600. Its totient is φ = 199452240.
The previous prime is 222211117. The next prime is 222211127. The reversal of 222211121 is 121112222.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 222211121 - 22 = 222211117 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 222211096 and 222211105.
It is not an unprimeable number, because it can be changed into a prime (222211127) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126986 + ... + 128723.
It is an arithmetic number, because the mean of its divisors is an integer number (30685200).
Almost surely, 2222211121 is an apocalyptic number.
It is an amenable number.
222211121 is a deficient number, since it is larger than the sum of its proper divisors (23270479).
222211121 is a wasteful number, since it uses less digits than its factorization.
222211121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 255799.
The product of its digits is 32, while the sum is 14.
The square root of 222211121 is about 14906.7474990355. The cubic root of 222211121 is about 605.6967779797.
Adding to 222211121 its reverse (121112222), we get a palindrome (343323343).
The spelling of 222211121 in words is "two hundred twenty-two million, two hundred eleven thousand, one hundred twenty-one".
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