213211220112 has 80 divisors (see below), whose sum is σ = 667631108160. Its totient is φ = 64609459200.

The previous prime is 213211220111. The next prime is 213211220113. The reversal of 213211220112 is 211022112312.

It is an interprime number because it is at equal distance from previous prime (213211220111) and next prime (213211220113).

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

It is not an unprimeable number, because it can be changed into a prime (213211220111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22429089 + ... + 22438592.

It is an arithmetic number, because the mean of its divisors is an integer number (8345388852).

Almost surely, 2^213211220112 is an apocalyptic number.

213211220112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213211220112 is an abundant number, since it is smaller than the sum of its proper divisors (454419888048).

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

213211220112 is a wasteful number, since it uses less digits than its factorization.

213211220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44867709 (or 44867697 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 213211220112 its reverse (211022112312), we get a palindrome (424233332424).

The spelling of 213211220112 in words is "two hundred thirteen billion, two hundred eleven million, two hundred twenty thousand, one hundred twelve".