1200021131012 has 12 divisors (see below), whose sum is σ = 2290949432016. Its totient is φ = 545464150440.

The previous prime is 1200021130961. The next prime is 1200021131123. The reversal of 1200021131012 is 2101311200021.

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, 13636603718 + ... + 13636603805.

It is an arithmetic number, because the mean of its divisors is an integer number (190912452668).

Almost surely, 2^{1200021131012} is an apocalyptic number.

It is an amenable number.

1200021131012 is a deficient number, since it is larger than the sum of its proper divisors (1090928301004).

1200021131012 is a wasteful number, since it uses less digits than its factorization.

1200021131012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27273207538 (or 27273207536 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1200021131012 its reverse (2101311200021), we get a palindrome (3301332331033).

The spelling of 1200021131012 in words is "one trillion, two hundred billion, twenty-one million, one hundred thirty-one thousand, twelve".