11990592221 has 4 divisors (see below), whose sum is σ = 12169556352. Its totient is φ = 11811628092.

The previous prime is 11990592209. The next prime is 11990592223. The reversal of 11990592221 is 12229509911.

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 11990592221 - 2⁶ = 11990592157 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 (11990592223) 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, 89481965 + ... + 89482098.

It is an arithmetic number, because the mean of its divisors is an integer number (3042389088).

Almost surely, 2^11990592221 is an apocalyptic number.

It is an amenable number.

11990592221 is a deficient number, since it is larger than the sum of its proper divisors (178964131).

11990592221 is an equidigital number, since it uses as much as digits as its factorization.

11990592221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178964130.

The product of its (nonzero) digits is 29160, while the sum is 41.

The spelling of 11990592221 in words is "eleven billion, nine hundred ninety million, five hundred ninety-two thousand, two hundred twenty-one".