9931210012 has 24 divisors (see below), whose sum is σ = 17565942240. Its totient is φ = 4912449600.

The previous prime is 9931209949. The next prime is 9931210031. The reversal of 9931210012 is 2100121399.

It is a congruent number.

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, 523558 + ... + 542194.

It is an arithmetic number, because the mean of its divisors is an integer number (731914260).

Almost surely, 2^9931210012 is an apocalyptic number.

It is an amenable number.

9931210012 is a deficient number, since it is larger than the sum of its proper divisors (7634732228).

9931210012 is a wasteful number, since it uses less digits than its factorization.

9931210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20061 (or 20059 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 9931210012 is about 99655.4565089138. The cubic root of 9931210012 is about 2149.4832009709.

The spelling of 9931210012 in words is "nine billion, nine hundred thirty-one million, two hundred ten thousand, twelve".