12321613772291 has 2 divisors, whose sum is σ = 12321613772292. Its totient is φ = 12321613772290.

The previous prime is 12321613772249. The next prime is 12321613772309. The reversal of 12321613772291 is 19227731612321.

12321613772291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12321613772291 is a prime.

It is a super-2 number, since 2×12321613772291² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12321613778291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160806886145 + 6160806886146.

It is an arithmetic number, because the mean of its divisors is an integer number (6160806886146).

Almost surely, 2^{12321613772291} is an apocalyptic number.

12321613772291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321613772291 is an equidigital number, since it uses as much as digits as its factorization.

12321613772291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The spelling of 12321613772291 in words is "twelve trillion, three hundred twenty-one billion, six hundred thirteen million, seven hundred seventy-two thousand, two hundred ninety-one".