1200021474456 has 48 divisors (see below), whose sum is σ = 3714352184400. Its totient is φ = 342863278272.

The previous prime is 1200021474413. The next prime is 1200021474467. The reversal of 1200021474456 is 6544741200021.

1200021474456 is a `hidden beast` number, since 1 + 200 + 0 + 2 + 1 + 4 + 7 + 445 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1200021474456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1190496991 + ... + 1190497998.

It is an arithmetic number, because the mean of its divisors is an integer number (77382337175).

Almost surely, 2^{1200021474456} is an apocalyptic number.

It is an amenable number.

1200021474456 is an abundant number, since it is smaller than the sum of its proper divisors (2514330709944).

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

1200021474456 is a wasteful number, since it uses less digits than its factorization.

1200021474456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380995008 (or 2380995001 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

Adding to 1200021474456 its reverse (6544741200021), we get a palindrome (7744762674477).

The spelling of 1200021474456 in words is "one trillion, two hundred billion, twenty-one million, four hundred seventy-four thousand, four hundred fifty-six".