213031661220012 has 96 divisors (see below), whose sum is σ = 508753165197312. Its totient is φ = 69348787497216.

The previous prime is 213031661219921. The next prime is 213031661220013. The reversal of 213031661220012 is 210022166130312.

It is not an unprimeable number, because it can be changed into a prime (213031661220013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 576928998 + ... + 577298130.

It is an arithmetic number, because the mean of its divisors is an integer number (5299512137472).

Almost surely, 2^{213031661220012} is an apocalyptic number.

It is an amenable number.

213031661220012 is an abundant number, since it is smaller than the sum of its proper divisors (295721503977300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213031661220012 is a wasteful number, since it uses less digits than its factorization.

213031661220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371407 (or 371405 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 213031661220012 in words is "two hundred thirteen trillion, thirty-one billion, six hundred sixty-one million, two hundred twenty thousand, twelve".