212211111201100 has 72 divisors (see below), whose sum is σ = 503088584394816. Its totient is φ = 77056001160000.

The previous prime is 212211111200989. The next prime is 212211111201163. The reversal of 212211111201100 is 1102111112212.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138834106 + ... + 140354305.

It is an arithmetic number, because the mean of its divisors is an integer number (6987341449928).

Almost surely, 2^{212211111201100} is an apocalyptic number.

212211111201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212211111201100 is an abundant number, since it is smaller than the sum of its proper divisors (290877473193716).

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

212211111201100 is a wasteful number, since it uses less digits than its factorization.

212211111201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279189127 (or 279189120 counting only the distinct ones).

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

Adding to 212211111201100 its reverse (1102111112212), we get a palindrome (213313222313312).

The spelling of 212211111201100 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred eleven million, two hundred one thousand, one hundred".