213222111100 has 36 divisors (see below), whose sum is σ = 471422030184. Its totient is φ = 83679618880.

The previous prime is 213222111079. The next prime is 213222111143. The reversal of 213222111100 is 1111222312.

It is a congruent number.

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, 20109994 + ... + 20120593.

It is an arithmetic number, because the mean of its divisors is an integer number (13095056394).

Almost surely, 2^213222111100 is an apocalyptic number.

213222111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213222111100 is an abundant number, since it is smaller than the sum of its proper divisors (258199919084).

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

213222111100 is a wasteful number, since it uses less digits than its factorization.

213222111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40230654 (or 40230647 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 213222111100 its reverse (1111222312), we get a palindrome (214333333412).

The spelling of 213222111100 in words is "two hundred thirteen billion, two hundred twenty-two million, one hundred eleven thousand, one hundred".