| Base | Representation |
|---|---|
| bin | 110100001101001100… |
| … | …1110000111001110101 |
| 3 | 101201101021201100021121 |
| 4 | 1220122121300321311 |
| 5 | 3314101200024341 |
| 6 | 123300435343541 |
| 7 | 11046146136055 |
| oct | 1503231607165 |
| 9 | 351337640247 |
| 10 | 112112111221 |
| 11 | 43601400580 |
| 12 | 1988a151bb1 |
| 13 | a758c68566 |
| 14 | 55d7903565 |
| 15 | 2db27534d1 |
| hex | 1a1a670e75 |
112112111221 has 4 divisors (see below), whose sum is σ = 122304121344. Its totient is φ = 101920101100.
The previous prime is 112112111219. The next prime is 112112111261. The reversal of 112112111221 is 122111211211.
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 a cyclic number.
It is not a de Polignac number, because 112112111221 - 21 = 112112111219 is a prime.
It is a super-2 number, since 2×1121121112212 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 112112111195 and 112112111204.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (112112111261) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5096005045 + ... + 5096005066.
It is an arithmetic number, because the mean of its divisors is an integer number (30576030336).
Almost surely, 2112112111221 is an apocalyptic number.
112112111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
112112111221 is a deficient number, since it is larger than the sum of its proper divisors (10192010123).
112112111221 is a wasteful number, since it uses less digits than its factorization.
112112111221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10192010122.
The product of its digits is 16, while the sum is 16.
Adding to 112112111221 its reverse (122111211211), we get a palindrome (234223322432).
It can be divided in two parts, 11211211 and 1221, that multiplied together give a palindrome (13688888631).
The spelling of 112112111221 in words is "one hundred twelve billion, one hundred twelve million, one hundred eleven thousand, two hundred twenty-one".
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