12001294091 has 2 divisors, whose sum is σ = 12001294092. Its totient is φ = 12001294090.

The previous prime is 12001294051. The next prime is 12001294093. The reversal of 12001294091 is 19049210021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12001294091 - 2¹⁸ = 12001031947 is a prime.

Together with 12001294093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12001294093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000647045 + 6000647046.

It is an arithmetic number, because the mean of its divisors is an integer number (6000647046).

Almost surely, 2^12001294091 is an apocalyptic number.

12001294091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001294091 is an equidigital number, since it uses as much as digits as its factorization.

12001294091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 12001294091 in words is "twelve billion, one million, two hundred ninety-four thousand, ninety-one".