212100213122 has 24 divisors (see below), whose sum is σ = 370112947200. Its totient is φ = 90895248360.

The previous prime is 212100213049. The next prime is 212100213161. The reversal of 212100213122 is 221312001212.

It is a self number, because there is not a number n which added to its sum of digits gives 212100213122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2266847 + ... + 2358557.

It is an arithmetic number, because the mean of its divisors is an integer number (15421372800).

Almost surely, 2^212100213122 is an apocalyptic number.

212100213122 is a deficient number, since it is larger than the sum of its proper divisors (158012734078).

212100213122 is a wasteful number, since it uses less digits than its factorization.

212100213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115326 (or 115319 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212100213122 its reverse (221312001212), we get a palindrome (433412214334).

The spelling of 212100213122 in words is "two hundred twelve billion, one hundred million, two hundred thirteen thousand, one hundred twenty-two".