12157113 has 4 divisors (see below), whose sum is σ = 16209488. Its totient is φ = 8104740.

The previous prime is 12157069. The next prime is 12157129. The reversal of 12157113 is 31175121.

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.

It is not a de Polignac number, because 12157113 - 2⁶ = 12157049 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 12157113.

It is not an unprimeable number, because it can be changed into a prime (12157153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026183 + ... + 2026188.

It is an arithmetic number, because the mean of its divisors is an integer number (4052372).

Almost surely, 2^12157113 is an apocalyptic number.

It is an amenable number.

12157113 is a deficient number, since it is larger than the sum of its proper divisors (4052375).

12157113 is an equidigital number, since it uses as much as digits as its factorization.

12157113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052374.

The product of its digits is 210, while the sum is 21.

The square root of 12157113 is about 3486.7051782449. The cubic root of 12157113 is about 229.9376831802.

The spelling of 12157113 in words is "twelve million, one hundred fifty-seven thousand, one hundred thirteen".