21112057080000 has 700 divisors, whose sum is σ = 78305335459120. Its totient is φ = 5622545664000.

The previous prime is 21112057079987. The next prime is 21112057080017. The reversal of 21112057080000 is 8075021112.

21112057080000 is a `hidden beast` number, since 2 + 1 + 1 + 12 + 0 + 570 + 80 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 2763716181 + ... + 2763723819.

Almost surely, 2^{21112057080000} is an apocalyptic number.

21112057080000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112057080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39152667729560).

21112057080000 is an abundant number, since it is smaller than the sum of its proper divisors (57193278379120).

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

21112057080000 is an frugal number, since it uses more digits than its factorization.

21112057080000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536 (or 8502 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The spelling of 21112057080000 in words is "twenty-one trillion, one hundred twelve billion, fifty-seven million, eighty thousand".