12001070556 has 18 divisors (see below), whose sum is σ = 30336039552. Its totient is φ = 4000356840.

The previous prime is 12001070489. The next prime is 12001070563. The reversal of 12001070556 is 65507010021.

12001070556 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 107 + 0 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166681500 + ... + 166681571.

Almost surely, 2^12001070556 is an apocalyptic number.

It is an amenable number.

12001070556 is an abundant number, since it is smaller than the sum of its proper divisors (18334968996).

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

12001070556 is a wasteful number, since it uses less digits than its factorization.

12001070556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333363081 (or 333363076 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

Adding to 12001070556 its reverse (65507010021), we get a palindrome (77508080577).

The spelling of 12001070556 in words is "twelve billion, one million, seventy thousand, five hundred fifty-six".