212112023100 has 36 divisors (see below), whose sum is σ = 613710787704. Its totient is φ = 56563206080.

The previous prime is 212112023047. The next prime is 212112023111. The reversal of 212112023100 is 1320211212.

It is a super-2 number, since 2×212112023100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212112023100.

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, 353519739 + ... + 353520338.

Almost surely, 2^212112023100 is an apocalyptic number.

212112023100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112023100 is an abundant number, since it is smaller than the sum of its proper divisors (401598764604).

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

212112023100 is a wasteful number, since it uses less digits than its factorization.

212112023100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707040094 (or 707040087 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212112023100 its reverse (1320211212), we get a palindrome (213432234312).

The spelling of 212112023100 in words is "two hundred twelve billion, one hundred twelve million, twenty-three thousand, one hundred".