21002313010 has 64 divisors (see below), whose sum is σ = 44860677120. Its totient is φ = 6926653440.

The previous prime is 21002312899. The next prime is 21002313047. The reversal of 21002313010 is 1031320012.

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, 531042 + ... + 569218.

It is an arithmetic number, because the mean of its divisors is an integer number (700948080).

Almost surely, 2^21002313010 is an apocalyptic number.

21002313010 is an abundant number, since it is smaller than the sum of its proper divisors (23858364110).

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

21002313010 is a wasteful number, since it uses less digits than its factorization.

21002313010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38491.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21002313010 its reverse (1031320012), we get a palindrome (22033633022).

The spelling of 21002313010 in words is "twenty-one billion, two million, three hundred thirteen thousand, ten".