11221200999956 has 24 divisors (see below), whose sum is σ = 19642044495360. Its totient is φ = 5609188483200.

The previous prime is 11221200999949. The next prime is 11221200999977. The reversal of 11221200999956 is 65999900212211.

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 7 ways as a sum of consecutive naturals, for example, 428915516 + ... + 428941676.

It is an arithmetic number, because the mean of its divisors is an integer number (818418520640).

Almost surely, 2^{11221200999956} is an apocalyptic number.

It is an amenable number.

11221200999956 is a deficient number, since it is larger than the sum of its proper divisors (8420843495404).

11221200999956 is a wasteful number, since it uses less digits than its factorization.

11221200999956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49055 (or 49053 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 56.

The spelling of 11221200999956 in words is "eleven trillion, two hundred twenty-one billion, two hundred million, nine hundred ninety-nine thousand, nine hundred fifty-six".