11904201121 has 2 divisors, whose sum is σ = 11904201122. Its totient is φ = 11904201120.

The previous prime is 11904201041. The next prime is 11904201137. The reversal of 11904201121 is 12110240911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11867052096 + 37149025 = 108936^2 + 6095^2 .

It is a cyclic number.

It is not a de Polignac number, because 11904201121 - 2²⁹ = 11367330209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11904201092 and 11904201101.

It is not a weakly prime, because it can be changed into another prime (11904201151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5952100560 + 5952100561.

It is an arithmetic number, because the mean of its divisors is an integer number (5952100561).

Almost surely, 2^11904201121 is an apocalyptic number.

It is an amenable number.

11904201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11904201121 is an equidigital number, since it uses as much as digits as its factorization.

11904201121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 11904201121 in words is "eleven billion, nine hundred four million, two hundred one thousand, one hundred twenty-one".