11556372222 has 40 divisors (see below), whose sum is σ = 25944536376. Its totient is φ = 3844730448.

The previous prime is 11556372211. The next prime is 11556372263. The reversal of 11556372222 is 22227365511.

11556372222 is a `hidden beast` number, since 1 + 1 + 5 + 563 + 72 + 2 + 22 = 666.

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 19 ways as a sum of consecutive naturals, for example, 16528 + ... + 152924.

Almost surely, 2^11556372222 is an apocalyptic number.

11556372222 is an abundant number, since it is smaller than the sum of its proper divisors (14388164154).

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

11556372222 is a wasteful number, since it uses less digits than its factorization.

11556372222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136934 (or 136925 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The spelling of 11556372222 in words is "eleven billion, five hundred fifty-six million, three hundred seventy-two thousand, two hundred twenty-two".