11216556566012 has 24 divisors (see below), whose sum is σ = 22800869088480. Its totient is φ = 4728290823360.

The previous prime is 11216556565967. The next prime is 11216556566023. The reversal of 11216556566012 is 21066565561211.

It is a super-2 number, since 2×11216556566012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3283533587 + ... + 3283537002.

It is an arithmetic number, because the mean of its divisors is an integer number (950036212020).

Almost surely, 2^{11216556566012} is an apocalyptic number.

It is an amenable number.

11216556566012 is an abundant number, since it is smaller than the sum of its proper divisors (11584312522468).

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

11216556566012 is a wasteful number, since it uses less digits than its factorization.

11216556566012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6567070661 (or 6567070659 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 11216556566012 in words is "eleven trillion, two hundred sixteen billion, five hundred fifty-six million, five hundred sixty-six thousand, twelve".