21311332010 has 16 divisors (see below), whose sum is σ = 38368143072. Its totient is φ = 8522811600.

The previous prime is 21311331997. The next prime is 21311332057. The reversal of 21311332010 is 1023311312.

It is a self number, because there is not a number n which added to its sum of digits gives 21311332010.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 162536 + ... + 262755.

It is an arithmetic number, because the mean of its divisors is an integer number (2398008942).

Almost surely, 2^21311332010 is an apocalyptic number.

21311332010 is a deficient number, since it is larger than the sum of its proper divisors (17056811062).

21311332010 is a wasteful number, since it uses less digits than its factorization.

21311332010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430309.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21311332010 its reverse (1023311312), we get a palindrome (22334643322).

The spelling of 21311332010 in words is "twenty-one billion, three hundred eleven million, three hundred thirty-two thousand, ten".