31200120120212 has 12 divisors (see below), whose sum is σ = 54652160941056. Its totient is φ = 15585216994200.

The previous prime is 31200120120193. The next prime is 31200120120271. The reversal of 31200120120212 is 21202102100213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710761748 + ... + 3710770155.

It is an arithmetic number, because the mean of its divisors is an integer number (4554346745088).

Almost surely, 2^{31200120120212} is an apocalyptic number.

It is an amenable number.

31200120120212 is a deficient number, since it is larger than the sum of its proper divisors (23452040820844).

31200120120212 is a wasteful number, since it uses less digits than its factorization.

31200120120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7421532958 (or 7421532956 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31200120120212 its reverse (21202102100213), we get a palindrome (52402222220425).

The spelling of 31200120120212 in words is "thirty-one trillion, two hundred billion, one hundred twenty million, one hundred twenty thousand, two hundred twelve".