21202320102000 has 80 divisors (see below), whose sum is σ = 68356280028192. Its totient is φ = 5653952025600.

The previous prime is 21202320101993. The next prime is 21202320102011. The reversal of 21202320102000 is 20102320212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1766854009 + ... + 1766866008.

Almost surely, 2^{21202320102000} is an apocalyptic number.

21202320102000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202320102000 is an abundant number, since it is smaller than the sum of its proper divisors (47153959926192).

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

21202320102000 is a wasteful number, since it uses less digits than its factorization.

21202320102000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533720043 (or 3533720027 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21202320102000 its reverse (20102320212), we get a palindrome (21222422422212).

The spelling of 21202320102000 in words is "twenty-one trillion, two hundred two billion, three hundred twenty million, one hundred two thousand".