11924859591121 has 9 divisors (see below), whose sum is σ = 11961517251099. Its totient is φ = 11888313962784.

The previous prime is 11924859591101. The next prime is 11924859591167. The reversal of 11924859591121 is 12119595842911.

It is a happy number.

The square root of 11924859591121 is 3453239.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3215655900625 + 8709203690496 = 1793225^2 + 2951136^2 .

It is not a de Polignac number, because 11924859591121 - 2⁴¹ = 9725836335569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11924859591101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1163736420 + ... + 1163746666.

Almost surely, 2^{11924859591121} is an apocalyptic number.

11924859591121 is the 3453239-th square number.

11924859591121 is the 1726620-th centered octagonal number.

It is an amenable number.

11924859591121 is a deficient number, since it is larger than the sum of its proper divisors (36657659978).

11924859591121 is an frugal number, since it uses more digits than its factorization.

11924859591121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21168 (or 10584 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 58.

The spelling of 11924859591121 in words is "eleven trillion, nine hundred twenty-four billion, eight hundred fifty-nine million, five hundred ninety-one thousand, one hundred twenty-one".