21031332010 has 32 divisors (see below), whose sum is σ = 41172101712. Its totient is φ = 7688524800.

The previous prime is 21031332001. The next prime is 21031332011. The reversal of 21031332010 is 1023313012.

It can be written as a sum of positive squares in 8 ways, for example, as 5873536321 + 15157795689 = 76639^2 + 123117^2 .

It is a super-2 number, since 2×21031332010² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21031332011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787759 + ... + 814018.

Almost surely, 2^21031332010 is an apocalyptic number.

21031332010 is a deficient number, since it is larger than the sum of its proper divisors (20140769702).

21031332010 is a wasteful number, since it uses less digits than its factorization.

21031332010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601898.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21031332010 its reverse (1023313012), we get a palindrome (22054645022).

The spelling of 21031332010 in words is "twenty-one billion, thirty-one million, three hundred thirty-two thousand, ten".