21010331012 has 24 divisors (see below), whose sum is σ = 40115531232. Its totient is φ = 9548984000.

The previous prime is 21010331009. The next prime is 21010331021. The reversal of 21010331012 is 21013301012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409208 + ... + 457680.

It is an arithmetic number, because the mean of its divisors is an integer number (1671480468).

Almost surely, 2^21010331012 is an apocalyptic number.

21010331012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21010331012 is a deficient number, since it is larger than the sum of its proper divisors (19105200220).

21010331012 is a wasteful number, since it uses less digits than its factorization.

21010331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58339 (or 58337 counting only the distinct ones).

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

Adding to 21010331012 its reverse (21013301012), we get a palindrome (42023632024).

The spelling of 21010331012 in words is "twenty-one billion, ten million, three hundred thirty-one thousand, twelve".