21112111202200 has 48 divisors (see below), whose sum is σ = 49103886926880. Its totient is φ = 8441708415360.

The previous prime is 21112111202141. The next prime is 21112111202239. The reversal of 21112111202200 is 220211121112.

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, 19060464 + ... + 20137663.

It is an arithmetic number, because the mean of its divisors is an integer number (1022997644310).

Almost surely, 2^{21112111202200} is an apocalyptic number.

21112111202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112111202200 is an abundant number, since it is smaller than the sum of its proper divisors (27991775724680).

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

21112111202200 is a wasteful number, since it uses less digits than its factorization.

21112111202200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39200836 (or 39200827 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21112111202200 its reverse (220211121112), we get a palindrome (21332322323312).

The spelling of 21112111202200 in words is "twenty-one trillion, one hundred twelve billion, one hundred eleven million, two hundred two thousand, two hundred".