21122111202200 has 24 divisors (see below), whose sum is σ = 49108908545580. Its totient is φ = 8448844480800.

The previous prime is 21122111202191. The next prime is 21122111202217. The reversal of 21122111202200 is 220211122112.

It is a super-2 number, since 2×21122111202200² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52805277806 + ... + 52805278205.

Almost surely, 2^{21122111202200} is an apocalyptic number.

21122111202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122111202200 is an abundant number, since it is smaller than the sum of its proper divisors (27986797343380).

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

21122111202200 is a wasteful number, since it uses less digits than its factorization.

21122111202200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105610556027 (or 105610556018 counting only the distinct ones).

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

Adding to 21122111202200 its reverse (220211122112), we get a palindrome (21342322324312).

The spelling of 21122111202200 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred eleven million, two hundred two thousand, two hundred".