21301021120000 has 100 divisors (see below), whose sum is σ = 53183524977396. Its totient is φ = 8520408320000.

The previous prime is 21301021119971. The next prime is 21301021120007. The reversal of 21301021120000 is 2112010312.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301021120007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32962846 + ... + 33602845.

Almost surely, 2^{21301021120000} is an apocalyptic number.

21301021120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301021120000 is an abundant number, since it is smaller than the sum of its proper divisors (31882503857396).

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

21301021120000 is an frugal number, since it uses more digits than its factorization.

21301021120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66565729 (or 66565698 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21301021120000 its reverse (2112010312), we get a palindrome (21303133130312).

The spelling of 21301021120000 in words is "twenty-one trillion, three hundred one billion, twenty-one million, one hundred twenty thousand".