11756470221 has 16 divisors (see below), whose sum is σ = 17422595520. Its totient is φ = 7835125680.

The previous prime is 11756470211. The next prime is 11756470223. The reversal of 11756470221 is 12207465711.

11756470221 is a `hidden beast` number, since 1 + 1 + 7 + 5 + 647 + 0 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 11756470221 - 2¹¹ = 11756468173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11756470223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17446 + ... + 154328.

It is an arithmetic number, because the mean of its divisors is an integer number (1088912220).

Almost surely, 2^11756470221 is an apocalyptic number.

It is an amenable number.

11756470221 is a deficient number, since it is larger than the sum of its proper divisors (5666125299).

11756470221 is a wasteful number, since it uses less digits than its factorization.

11756470221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140073 (or 140067 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The spelling of 11756470221 in words is "eleven billion, seven hundred fifty-six million, four hundred seventy thousand, two hundred twenty-one".