21301311023202 has 16 divisors (see below), whose sum is σ = 48688710910272. Its totient is φ = 6086088863760.

The previous prime is 21301311023191. The next prime is 21301311023227. The reversal of 21301311023202 is 20232011310312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253587035949 + ... + 253587036032.

It is an arithmetic number, because the mean of its divisors is an integer number (3043044431892).

Almost surely, 2^{21301311023202} is an apocalyptic number.

21301311023202 is an abundant number, since it is smaller than the sum of its proper divisors (27387399887070).

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

21301311023202 is a wasteful number, since it uses less digits than its factorization.

21301311023202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507174071993.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21301311023202 its reverse (20232011310312), we get a palindrome (41533322333514).

The spelling of 21301311023202 in words is "twenty-one trillion, three hundred one billion, three hundred eleven million, twenty-three thousand, two hundred two".