21023021303310 has 64 divisors (see below), whose sum is σ = 55600062110208. Its totient is φ = 5054551092864.

The previous prime is 21023021303279. The next prime is 21023021303357. The reversal of 21023021303310 is 1330312032012.

It is a super-2 number, since 2×21023021303310² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 626787682 + ... + 626821221.

It is an arithmetic number, because the mean of its divisors is an integer number (868750970472).

Almost surely, 2^{21023021303310} is an apocalyptic number.

21023021303310 is an abundant number, since it is smaller than the sum of its proper divisors (34577040806898).

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

21023021303310 is a wasteful number, since it uses less digits than its factorization.

21023021303310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253608969.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21023021303310 its reverse (1330312032012), we get a palindrome (22353333335322).

The spelling of 21023021303310 in words is "twenty-one trillion, twenty-three billion, twenty-one million, three hundred three thousand, three hundred ten".