1001101100556 has 12 divisors (see below), whose sum is σ = 2335902567992. Its totient is φ = 333700366848.

The previous prime is 1001101100521. The next prime is 1001101100579. The reversal of 1001101100556 is 6550011011001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 41712545845 + ... + 41712545868.

Almost surely, 2^{1001101100556} is an apocalyptic number.

It is an amenable number.

1001101100556 is an abundant number, since it is smaller than the sum of its proper divisors (1334801467436).

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

1001101100556 is a wasteful number, since it uses less digits than its factorization.

1001101100556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83425091720 (or 83425091718 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 1001101100556 its reverse (6550011011001), we get a palindrome (7551112111557).

The spelling of 1001101100556 in words is "one trillion, one billion, one hundred one million, one hundred thousand, five hundred fifty-six".