11912911 has 2 divisors, whose sum is σ = 11912912. Its totient is φ = 11912910.

The previous prime is 11912899. The next prime is 11912921. The reversal of 11912911 is 11921911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11912911 - 2¹⁷ = 11781839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11912921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5956455 + 5956456.

It is an arithmetic number, because the mean of its divisors is an integer number (5956456).

Almost surely, 2^11912911 is an apocalyptic number.

11912911 is a deficient number, since it is larger than the sum of its proper divisors (1).

11912911 is an equidigital number, since it uses as much as digits as its factorization.

11912911 is an odious number, because the sum of its binary digits is odd.

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

The square root of 11912911 is about 3451.5085107819. The cubic root of 11912911 is about 228.3876587073.

The spelling of 11912911 in words is "eleven million, nine hundred twelve thousand, nine hundred eleven".