212122102012100 has 36 divisors (see below), whose sum is σ = 526062812991744. Its totient is φ = 72727577832480.

The previous prime is 212122102012087. The next prime is 212122102012129. The reversal of 212122102012100 is 1210201221212.

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, 151515786452 + ... + 151515787851.

Almost surely, 2^{212122102012100} is an apocalyptic number.

212122102012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212122102012100 is an abundant number, since it is smaller than the sum of its proper divisors (313940710979644).

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

212122102012100 is a wasteful number, since it uses less digits than its factorization.

212122102012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303031574324 (or 303031574317 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212122102012100 its reverse (1210201221212), we get a palindrome (213332303233312).

The spelling of 212122102012100 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred two million, twelve thousand, one hundred".