113212222220 has 24 divisors (see below), whose sum is σ = 241294112304. Its totient is φ = 44608994496.

The previous prime is 113212222169. The next prime is 113212222223. The reversal of 113212222220 is 22222212311.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 113212222192 and 113212222201.

It is not an unprimeable number, because it can be changed into a prime (113212222223) 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, 42242027 + ... + 42244706.

It is an arithmetic number, because the mean of its divisors is an integer number (10053921346).

Almost surely, 2^113212222220 is an apocalyptic number.

113212222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113212222220 is an abundant number, since it is smaller than the sum of its proper divisors (128081890084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113212222220 is a wasteful number, since it uses less digits than its factorization.

113212222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84486809 (or 84486807 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 113212222220 its reverse (22222212311), we get a palindrome (135434434531).

Subtracting from 113212222220 its reverse (22222212311), we obtain a palindrome (90990009909).

The spelling of 113212222220 in words is "one hundred thirteen billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty".