212112220100 has 36 divisors (see below), whose sum is σ = 502127476368. Its totient is φ = 77131716000.

The previous prime is 212112220087. The next prime is 212112220141. The reversal of 212112220100 is 1022211212.

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, 96413546 + ... + 96415745.

Almost surely, 2^212112220100 is an apocalyptic number.

212112220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112220100 is an abundant number, since it is smaller than the sum of its proper divisors (290015256268).

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

212112220100 is a wasteful number, since it uses less digits than its factorization.

212112220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192829316 (or 192829309 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212112220100 its reverse (1022211212), we get a palindrome (213134431312).

It can be divided in two parts, 2121 and 12220100, that added together give a palindrome (12222221).

The spelling of 212112220100 in words is "two hundred twelve billion, one hundred twelve million, two hundred twenty thousand, one hundred".