21031002103112 has 32 divisors (see below), whose sum is σ = 39584969493600. Its totient is φ = 10475033716224.

The previous prime is 21031002103099. The next prime is 21031002103129. The reversal of 21031002103112 is 21130120013012.

It is a super-2 number, since 2×21031002103112² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5708963 + ... + 8640269.

It is an arithmetic number, because the mean of its divisors is an integer number (1237030296675).

Almost surely, 2^{21031002103112} is an apocalyptic number.

It is an amenable number.

21031002103112 is a deficient number, since it is larger than the sum of its proper divisors (18553967390488).

21031002103112 is a wasteful number, since it uses less digits than its factorization.

21031002103112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934765 (or 2934761 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21031002103112 its reverse (21130120013012), we get a palindrome (42161122116124).

The spelling of 21031002103112 in words is "twenty-one trillion, thirty-one billion, two million, one hundred three thousand, one hundred twelve".