11767052221 has 4 divisors (see below), whose sum is σ = 11767303744. Its totient is φ = 11766800700.

The previous prime is 11767052191. The next prime is 11767052237. The reversal of 11767052221 is 12225076711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11767052221 - 2¹¹ = 11767050173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11767052251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32565 + ... + 156826.

It is an arithmetic number, because the mean of its divisors is an integer number (2941825936).

Almost surely, 2^11767052221 is an apocalyptic number.

It is an amenable number.

11767052221 is a deficient number, since it is larger than the sum of its proper divisors (251523).

11767052221 is an equidigital number, since it uses as much as digits as its factorization.

11767052221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251522.

The product of its (nonzero) digits is 11760, while the sum is 34.

The spelling of 11767052221 in words is "eleven billion, seven hundred sixty-seven million, fifty-two thousand, two hundred twenty-one".