21033110210 has 32 divisors (see below), whose sum is σ = 43275133440. Its totient is φ = 7210181952.

The previous prime is 21033110191. The next prime is 21033110251. The reversal of 21033110210 is 1201133012.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 485831 + ... + 527349.

It is an arithmetic number, because the mean of its divisors is an integer number (1352347920).

Almost surely, 2^21033110210 is an apocalyptic number.

21033110210 is an abundant number, since it is smaller than the sum of its proper divisors (22242023230).

21033110210 is a wasteful number, since it uses less digits than its factorization.

21033110210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48770.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21033110210 its reverse (1201133012), we get a palindrome (22234243222).

The spelling of 21033110210 in words is "twenty-one billion, thirty-three million, one hundred ten thousand, two hundred ten".