12222207905797 has 2 divisors, whose sum is σ = 12222207905798. Its totient is φ = 12222207905796.

The previous prime is 12222207905759. The next prime is 12222207905917. The reversal of 12222207905797 is 79750970222221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10109353789441 + 2112854116356 = 3179521^2 + 1453566^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222207905797 - 2²³ = 12222199517189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222207905707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111103952898 + 6111103952899.

It is an arithmetic number, because the mean of its divisors is an integer number (6111103952899).

Almost surely, 2^{12222207905797} is an apocalyptic number.

It is an amenable number.

12222207905797 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222207905797 is an equidigital number, since it uses as much as digits as its factorization.

12222207905797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 12222207905797 in words is "twelve trillion, two hundred twenty-two billion, two hundred seven million, nine hundred five thousand, seven hundred ninety-seven".