21023113210 has 16 divisors (see below), whose sum is σ = 41281749792. Its totient is φ = 7644768400.

The previous prime is 21023113193. The next prime is 21023113247. The reversal of 21023113210 is 1231132012.

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, 95559496 + ... + 95559715.

It is an arithmetic number, because the mean of its divisors is an integer number (2580109362).

Almost surely, 2^21023113210 is an apocalyptic number.

21023113210 is a deficient number, since it is larger than the sum of its proper divisors (20258636582).

21023113210 is a wasteful number, since it uses less digits than its factorization.

21023113210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191119229.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21023113210 its reverse (1231132012), we get a palindrome (22254245222).

The spelling of 21023113210 in words is "twenty-one billion, twenty-three million, one hundred thirteen thousand, two hundred ten".