21372020712000 has 1008 divisors, whose sum is σ = 89008683259392. Its totient is φ = 4880884377600.

The previous prime is 21372020711971. The next prime is 21372020712023. The reversal of 21372020712000 is 21702027312.

21372020712000 is a `hidden beast` number, since 2 + 1 + 372 + 0 + 20 + 71 + 200 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6431542339 + ... + 6431545661.

Almost surely, 2^{21372020712000} is an apocalyptic number.

21372020712000 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 21372020712000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44504341629696).

21372020712000 is an abundant number, since it is smaller than the sum of its proper divisors (67636662547392).

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

21372020712000 is a wasteful number, since it uses less digits than its factorization.

21372020712000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193 (or 5163 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

Adding to 21372020712000 its reverse (21702027312), we get a palindrome (21393722739312).

The spelling of 21372020712000 in words is "twenty-one trillion, three hundred seventy-two billion, twenty million, seven hundred twelve thousand".