12047111969 has 2 divisors, whose sum is σ = 12047111970. Its totient is φ = 12047111968.

The previous prime is 12047111933. The next prime is 12047111981. The reversal of 12047111969 is 96911174021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11982148369 + 64963600 = 109463^2 + 8060^2 .

It is a cyclic number.

It is not a de Polignac number, because 12047111969 - 2²⁴ = 12030334753 is a prime.

It is a super-2 number, since 2×12047111969² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12047111269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6023555984 + 6023555985.

It is an arithmetic number, because the mean of its divisors is an integer number (6023555985).

Almost surely, 2^12047111969 is an apocalyptic number.

It is an amenable number.

12047111969 is a deficient number, since it is larger than the sum of its proper divisors (1).

12047111969 is an equidigital number, since it uses as much as digits as its factorization.

12047111969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 41.

The spelling of 12047111969 in words is "twelve billion, forty-seven million, one hundred eleven thousand, nine hundred sixty-nine".