12001221994627 has 2 divisors, whose sum is σ = 12001221994628. Its totient is φ = 12001221994626.

The previous prime is 12001221994537. The next prime is 12001221994661. The reversal of 12001221994627 is 72649912210021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001221994627 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001221998627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000610997313 + 6000610997314.

It is an arithmetic number, because the mean of its divisors is an integer number (6000610997314).

Almost surely, 2^{12001221994627} is an apocalyptic number.

12001221994627 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001221994627 is an equidigital number, since it uses as much as digits as its factorization.

12001221994627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 12001221994627 in words is "twelve trillion, one billion, two hundred twenty-one million, nine hundred ninety-four thousand, six hundred twenty-seven".