21133322210 has 192 divisors, whose sum is σ = 52482608640. Its totient is φ = 6022356480.

The previous prime is 21133322209. The next prime is 21133322219. The reversal of 21133322210 is 1222333112.

It is not an unprimeable number, because it can be changed into a prime (21133322219) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7636247 + ... + 7639013.

It is an arithmetic number, because the mean of its divisors is an integer number (273346920).

Almost surely, 2^21133322210 is an apocalyptic number.

21133322210 is an abundant number, since it is smaller than the sum of its proper divisors (31349286430).

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

21133322210 is a wasteful number, since it uses less digits than its factorization.

21133322210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921 (or 2914 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21133322210 its reverse (1222333112), we get a palindrome (22355655322).

It can be divided in two parts, 21133 and 322210, that added together give a palindrome (343343).

The spelling of 21133322210 in words is "twenty-one billion, one hundred thirty-three million, three hundred twenty-two thousand, two hundred ten".