11696976221 has 4 divisors (see below), whose sum is σ = 13367972832. Its totient is φ = 10025979612.

The previous prime is 11696976217. The next prime is 11696976233. The reversal of 11696976221 is 12267969611.

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 11696976221 - 2² = 11696976217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11696976221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11696976121) 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, 835498295 + ... + 835498308.

It is an arithmetic number, because the mean of its divisors is an integer number (3341993208).

Almost surely, 2^11696976221 is an apocalyptic number.

It is an amenable number.

11696976221 is a deficient number, since it is larger than the sum of its proper divisors (1670996611).

11696976221 is an equidigital number, since it uses as much as digits as its factorization.

11696976221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670996610.

The product of its digits is 489888, while the sum is 50.

The spelling of 11696976221 in words is "eleven billion, six hundred ninety-six million, nine hundred seventy-six thousand, two hundred twenty-one".