213120113112 has 48 divisors (see below), whose sum is σ = 577389101640. Its totient is φ = 71016801408.

The previous prime is 213120113111. The next prime is 213120113117. The reversal of 213120113112 is 211311021312.

It is a super-2 number, since 2×213120113112² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120113111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261733 + ... + 703380.

Almost surely, 2^213120113112 is an apocalyptic number.

It is an amenable number.

213120113112 is an abundant number, since it is smaller than the sum of its proper divisors (364268988528).

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

213120113112 is a wasteful number, since it uses less digits than its factorization.

213120113112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968192 (or 968185 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 213120113112 its reverse (211311021312), we get a palindrome (424431134424).

The spelling of 213120113112 in words is "two hundred thirteen billion, one hundred twenty million, one hundred thirteen thousand, one hundred twelve".