12229767691 has 2 divisors, whose sum is σ = 12229767692. Its totient is φ = 12229767690.

The previous prime is 12229767619. The next prime is 12229767703. The reversal of 12229767691 is 19676792221.

Together with previous prime (12229767619) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12229767691 - 2²³ = 12221379083 is a prime.

It is not a weakly prime, because it can be changed into another prime (12229767091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6114883845 + 6114883846.

It is an arithmetic number, because the mean of its divisors is an integer number (6114883846).

Almost surely, 2^12229767691 is an apocalyptic number.

12229767691 is a deficient number, since it is larger than the sum of its proper divisors (1).

12229767691 is an equidigital number, since it uses as much as digits as its factorization.

12229767691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 52.

The spelling of 12229767691 in words is "twelve billion, two hundred twenty-nine million, seven hundred sixty-seven thousand, six hundred ninety-one".