21023002210 has 32 divisors (see below), whose sum is σ = 43255555200. Its totient is φ = 7206513792.

The previous prime is 21023002153. The next prime is 21023002243. The reversal of 21023002210 is 1220032012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383757 + ... + 435103.

It is an arithmetic number, because the mean of its divisors is an integer number (1351736100).

Almost surely, 2^21023002210 is an apocalyptic number.

21023002210 is an abundant number, since it is smaller than the sum of its proper divisors (22232552990).

21023002210 is a wasteful number, since it uses less digits than its factorization.

21023002210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57210.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21023002210 its reverse (1220032012), we get a palindrome (22243034222).

The spelling of 21023002210 in words is "twenty-one billion, twenty-three million, two thousand, two hundred ten".