221422001223791 has 2 divisors, whose sum is σ = 221422001223792. Its totient is φ = 221422001223790.

The previous prime is 221422001223751. The next prime is 221422001223793. The reversal of 221422001223791 is 197322100224122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221422001223791 - 2²² = 221421997029487 is a prime.

Together with 221422001223793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221422001223793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110711000611895 + 110711000611896.

It is an arithmetic number, because the mean of its divisors is an integer number (110711000611896).

Almost surely, 2^{221422001223791} is an apocalyptic number.

221422001223791 is a deficient number, since it is larger than the sum of its proper divisors (1).

221422001223791 is an equidigital number, since it uses as much as digits as its factorization.

221422001223791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 221422001223791 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one million, two hundred twenty-three thousand, seven hundred ninety-one".