113213023220 has 96 divisors (see below), whose sum is σ = 261773600256. Its totient is φ = 41125983360.

The previous prime is 113213023219. The next prime is 113213023223. The reversal of 113213023220 is 22320312311.

It is a super-2 number, since 2×113213023220² (a number of 23 digits) contains 22 as substring.

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 = 113213023192 and 113213023201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113213023223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38677397 + ... + 38680323.

It is an arithmetic number, because the mean of its divisors is an integer number (2726808336).

Almost surely, 2^113213023220 is an apocalyptic number.

113213023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113213023220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130886800128).

113213023220 is an abundant number, since it is smaller than the sum of its proper divisors (148560577036).

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

113213023220 is a wasteful number, since it uses less digits than its factorization.

113213023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422 (or 4398 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 113213023220 its reverse (22320312311), we get a palindrome (135533335531).

The spelling of 113213023220 in words is "one hundred thirteen billion, two hundred thirteen million, twenty-three thousand, two hundred twenty".