113212044220 has 24 divisors (see below), whose sum is σ = 259358501808. Its totient is φ = 41168016000.

The previous prime is 113212044157. The next prime is 113212044227. The reversal of 113212044220 is 22440212311.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 113212044191 and 113212044200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113212044227) 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, 257299881 + ... + 257300320.

It is an arithmetic number, because the mean of its divisors is an integer number (10806604242).

Almost surely, 2^113212044220 is an apocalyptic number.

113212044220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113212044220 is an abundant number, since it is smaller than the sum of its proper divisors (146146457588).

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

113212044220 is a wasteful number, since it uses less digits than its factorization.

113212044220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514600221 (or 514600219 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 113212044220 its reverse (22440212311), we get a palindrome (135652256531).

The spelling of 113212044220 in words is "one hundred thirteen billion, two hundred twelve million, forty-four thousand, two hundred twenty".