21012133010 has 64 divisors (see below), whose sum is σ = 41500698624. Its totient is φ = 7596388800.

The previous prime is 21012132997. The next prime is 21012133013. The reversal of 21012133010 is 1033121012.

It is not an unprimeable number, because it can be changed into a prime (21012133013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23064455 + ... + 23065365.

It is an arithmetic number, because the mean of its divisors is an integer number (648448416).

Almost surely, 2^21012133010 is an apocalyptic number.

21012133010 is a deficient number, since it is larger than the sum of its proper divisors (20488565614).

21012133010 is a wasteful number, since it uses less digits than its factorization.

21012133010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919.

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

Adding to 21012133010 its reverse (1033121012), we get a palindrome (22045254022).

The spelling of 21012133010 in words is "twenty-one billion, twelve million, one hundred thirty-three thousand, ten".