21133120210 has 16 divisors (see below), whose sum is σ = 38267401536. Its totient is φ = 8402629168.

The previous prime is 21133120193. The next prime is 21133120231. The reversal of 21133120210 is 1202133112.

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, 6325612 + ... + 6328951.

It is an arithmetic number, because the mean of its divisors is an integer number (2391712596).

Almost surely, 2^21133120210 is an apocalyptic number.

21133120210 is a deficient number, since it is larger than the sum of its proper divisors (17134281326).

21133120210 is a wasteful number, since it uses less digits than its factorization.

21133120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12654737.

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

Adding to 21133120210 its reverse (1202133112), we get a palindrome (22335253322).

The spelling of 21133120210 in words is "twenty-one billion, one hundred thirty-three million, one hundred twenty thousand, two hundred ten".