1200020131996 has 12 divisors (see below), whose sum is σ = 2400040264048. Its totient is φ = 514294342272.

The previous prime is 1200020131949. The next prime is 1200020131997. The reversal of 1200020131996 is 6991310200021.

1200020131996 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200020131997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21428930901 + ... + 21428930956.

Almost surely, 2^{1200020131996} is an apocalyptic number.

It is an amenable number.

1200020131996 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1200020131996 is a wasteful number, since it uses less digits than its factorization.

1200020131996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42857861868 (or 42857861866 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 1200020131996 in words is "one trillion, two hundred billion, twenty million, one hundred thirty-one thousand, nine hundred ninety-six".