12116919 has 4 divisors (see below), whose sum is σ = 16155896. Its totient is φ = 8077944.

The previous prime is 12116899. The next prime is 12116953. The reversal of 12116919 is 91961121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12116919 - 2⁵ = 12116887 is a prime.

It is a super-2 number, since 2×12116919² = 293639452105122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12116959) 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, 2019484 + ... + 2019489.

It is an arithmetic number, because the mean of its divisors is an integer number (4038974).

Almost surely, 2^12116919 is an apocalyptic number.

12116919 is a deficient number, since it is larger than the sum of its proper divisors (4038977).

12116919 is an equidigital number, since it uses as much as digits as its factorization.

12116919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038976.

The product of its digits is 972, while the sum is 30.

The square root of 12116919 is about 3480.9365119174. The cubic root of 12116919 is about 229.6839957724.

The spelling of 12116919 in words is "twelve million, one hundred sixteen thousand, nine hundred nineteen".