21021031330101 has 24 divisors (see below), whose sum is σ = 33124451312160. Its totient is φ = 12739864394400.

The previous prime is 21021031330073. The next prime is 21021031330139. The reversal of 21021031330101 is 10103313012012.

21021031330101 is a `hidden beast` number, since 2 + 10 + 210 + 313 + 30 + 101 = 666.

It is not a de Polignac number, because 21021031330101 - 2³³ = 21012441395509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021031330181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7192006 + ... + 9683336.

It is an arithmetic number, because the mean of its divisors is an integer number (1380185471340).

Almost surely, 2^{21021031330101} is an apocalyptic number.

It is an amenable number.

21021031330101 is a deficient number, since it is larger than the sum of its proper divisors (12103419982059).

21021031330101 is a wasteful number, since it uses less digits than its factorization.

21021031330101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576577 (or 2576574 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21021031330101 its reverse (10103313012012), we get a palindrome (31124344342113).

The spelling of 21021031330101 in words is "twenty-one trillion, twenty-one billion, thirty-one million, three hundred thirty thousand, one hundred one".