12321101291 has 2 divisors, whose sum is σ = 12321101292. Its totient is φ = 12321101290.

The previous prime is 12321101281. The next prime is 12321101321. The reversal of 12321101291 is 19210112321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12321101291 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12321101231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160550645 + 6160550646.

It is an arithmetic number, because the mean of its divisors is an integer number (6160550646).

Almost surely, 2^12321101291 is an apocalyptic number.

12321101291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321101291 is an equidigital number, since it uses as much as digits as its factorization.

12321101291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 12321101291 in words is "twelve billion, three hundred twenty-one million, one hundred one thousand, two hundred ninety-one".