12919111 has 2 divisors, whose sum is σ = 12919112. Its totient is φ = 12919110.

The previous prime is 12919103. The next prime is 12919117. The reversal of 12919111 is 11191921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12919111 - 2³ = 12919103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12919117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6459555 + 6459556.

It is an arithmetic number, because the mean of its divisors is an integer number (6459556).

Almost surely, 2^12919111 is an apocalyptic number.

12919111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12919111 is an equidigital number, since it uses as much as digits as its factorization.

12919111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 25.

The square root of 12919111 is about 3594.3164857870. The cubic root of 12919111 is about 234.6447688635.

The spelling of 12919111 in words is "twelve million, nine hundred nineteen thousand, one hundred eleven".