12116254621 has 4 divisors (see below), whose sum is σ = 12118226752. Its totient is φ = 12114282492.

The previous prime is 12116254541. The next prime is 12116254679. The reversal of 12116254621 is 12645261121.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12645261121 = 19 ⋅665540059.

It is a cyclic number.

It is not a de Polignac number, because 12116254621 - 2⁹ = 12116254109 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 (12116254421) 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, 976821 + ... + 989146.

It is an arithmetic number, because the mean of its divisors is an integer number (3029556688).

Almost surely, 2^12116254621 is an apocalyptic number.

It is an amenable number.

12116254621 is a deficient number, since it is larger than the sum of its proper divisors (1972131).

12116254621 is an equidigital number, since it uses as much as digits as its factorization.

12116254621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972130.

The product of its digits is 5760, while the sum is 31.

The spelling of 12116254621 in words is "twelve billion, one hundred sixteen million, two hundred fifty-four thousand, six hundred twenty-one".