21102620000 has 480 divisors, whose sum is σ = 65977680384. Its totient is φ = 6451200000.

The previous prime is 21102619981. The next prime is 21102620003. The reversal of 21102620000 is 2620112.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102620003) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 109339904 + ... + 109340096.

Almost surely, 2^21102620000 is an apocalyptic number.

21102620000 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 21102620000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32988840192).

21102620000 is an abundant number, since it is smaller than the sum of its proper divisors (44875060384).

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

21102620000 is a wasteful number, since it uses less digits than its factorization.

21102620000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The spelling of 21102620000 in words is "twenty-one billion, one hundred two million, six hundred twenty thousand".