21311321013010 has 64 divisors (see below), whose sum is σ = 44336224800000. Its totient is φ = 7224118336512.

The previous prime is 21311321012941. The next prime is 21311321013041. The reversal of 21311321013010 is 1031012311312.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91545741 + ... + 91778239.

It is an arithmetic number, because the mean of its divisors is an integer number (692753512500).

Almost surely, 2^{21311321013010} is an apocalyptic number.

21311321013010 is an abundant number, since it is smaller than the sum of its proper divisors (23024903786990).

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

21311321013010 is a wasteful number, since it uses less digits than its factorization.

21311321013010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247315.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 21311321013010 its reverse (1031012311312), we get a palindrome (22342333324322).

The spelling of 21311321013010 in words is "twenty-one trillion, three hundred eleven billion, three hundred twenty-one million, thirteen thousand, ten".