22222101397 has 2 divisors, whose sum is σ = 22222101398. Its totient is φ = 22222101396.

The previous prime is 22222101389. The next prime is 22222101401. The reversal of 22222101397 is 79310122222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12149771076 + 10072330321 = 110226^2 + 100361^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222101397 - 2³ = 22222101389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22222101697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111050698 + 11111050699.

It is an arithmetic number, because the mean of its divisors is an integer number (11111050699).

Almost surely, 2^22222101397 is an apocalyptic number.

It is an amenable number.

22222101397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222101397 is an equidigital number, since it uses as much as digits as its factorization.

22222101397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 22222101397 in words is "twenty-two billion, two hundred twenty-two million, one hundred one thousand, three hundred ninety-seven".