213112122210 has 96 divisors (see below), whose sum is σ = 596857480128. Its totient is φ = 52445750400.

The previous prime is 213112122187. The next prime is 213112122227. The reversal of 213112122210 is 12221211312.

213112122210 is a `hidden beast` number, since 21 + 311 + 2 + 122 + 210 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5422089 + ... + 5461251.

It is an arithmetic number, because the mean of its divisors is an integer number (6217265418).

Almost surely, 2^213112122210 is an apocalyptic number.

213112122210 is an abundant number, since it is smaller than the sum of its proper divisors (383745357918).

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

213112122210 is a wasteful number, since it uses less digits than its factorization.

213112122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43840 (or 43837 counting only the distinct ones).

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

Adding to 213112122210 its reverse (12221211312), we get a palindrome (225333333522).

The spelling of 213112122210 in words is "two hundred thirteen billion, one hundred twelve million, one hundred twenty-two thousand, two hundred ten".