122221021111997 has 2 divisors, whose sum is σ = 122221021111998. Its totient is φ = 122221021111996.

The previous prime is 122221021111979. The next prime is 122221021112027. The reversal of 122221021111997 is 799111120122221.

Together with previous prime (122221021111979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122216695287556 + 4325824441 = 11055166^2 + 65771^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221021111997 - 2²⁸ = 122220752676541 is a prime.

It is a super-4 number, since 4×122221021111997⁴ (a number of 57 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122221021111957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110510555998 + 61110510555999.

It is an arithmetic number, because the mean of its divisors is an integer number (61110510555999).

Almost surely, 2^{122221021111997} is an apocalyptic number.

It is an amenable number.

122221021111997 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221021111997 is an equidigital number, since it uses as much as digits as its factorization.

122221021111997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 41.

The spelling of 122221021111997 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, twenty-one million, one hundred eleven thousand, nine hundred ninety-seven".