21112212020000 has 60 divisors (see below), whose sum is σ = 51939208450206. Its totient is φ = 8444884800000.

The previous prime is 21112212019993. The next prime is 21112212020017. The reversal of 21112212020000 is 2021221112.

It can be written as a sum of positive squares in 5 ways, for example, as 6016174096 + 21106195845904 = 77564^2 + 4594148^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 527785301 + ... + 527825300.

Almost surely, 2^{21112212020000} is an apocalyptic number.

21112212020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112212020000 is an abundant number, since it is smaller than the sum of its proper divisors (30826996430206).

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

21112212020000 is an equidigital number, since it uses as much as digits as its factorization.

21112212020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055610631 (or 1055610608 counting only the distinct ones).

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

Adding to 21112212020000 its reverse (2021221112), we get a palindrome (21114233241112).

The spelling of 21112212020000 in words is "twenty-one trillion, one hundred twelve billion, two hundred twelve million, twenty thousand".