12012039997 has 2 divisors, whose sum is σ = 12012039998. Its totient is φ = 12012039996.

The previous prime is 12012039901. The next prime is 12012040009. The reversal of 12012039997 is 79993021021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11107895236 + 904144761 = 105394^2 + 30069^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012039997 - 2¹¹ = 12012037949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012039397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006019998 + 6006019999.

It is an arithmetic number, because the mean of its divisors is an integer number (6006019999).

Almost surely, 2^12012039997 is an apocalyptic number.

It is an amenable number.

12012039997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012039997 is an equidigital number, since it uses as much as digits as its factorization.

12012039997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 43.

The spelling of 12012039997 in words is "twelve billion, twelve million, thirty-nine thousand, nine hundred ninety-seven".