212110102100 has 36 divisors (see below), whose sum is σ = 495684995484. Its totient is φ = 78317575680.

The previous prime is 212110102097. The next prime is 212110102181. The reversal of 212110102100 is 1201011212.

It can be written as a sum of positive squares in 6 ways, for example, as 2554898116 + 209555203984 = 50546^2 + 457772^2 .

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, 81579509 + ... + 81582108.

Almost surely, 2^212110102100 is an apocalyptic number.

212110102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212110102100 is an abundant number, since it is smaller than the sum of its proper divisors (283574893384).

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

212110102100 is a wasteful number, since it uses less digits than its factorization.

212110102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163161644 (or 163161637 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212110102100 its reverse (1201011212), we get a palindrome (213311113312).

The spelling of 212110102100 in words is "two hundred twelve billion, one hundred ten million, one hundred two thousand, one hundred".