21002331310 has 16 divisors (see below), whose sum is σ = 37808607456. Its totient is φ = 8399952288.

The previous prime is 21002331239. The next prime is 21002331347. The reversal of 21002331310 is 1313320012.

It is a super-2 number, since 2×21002331310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 29154 + ... + 207013.

It is an arithmetic number, because the mean of its divisors is an integer number (2363037966).

Almost surely, 2^21002331310 is an apocalyptic number.

21002331310 is a deficient number, since it is larger than the sum of its proper divisors (16806276146).

21002331310 is a wasteful number, since it uses less digits than its factorization.

21002331310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245067.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21002331310 its reverse (1313320012), we get a palindrome (22315651322).

The spelling of 21002331310 in words is "twenty-one billion, two million, three hundred thirty-one thousand, three hundred ten".