122621416997 has 2 divisors, whose sum is σ = 122621416998. Its totient is φ = 122621416996.

The previous prime is 122621416861. The next prime is 122621417041. The reversal of 122621416997 is 799614126221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104415581956 + 18205835041 = 323134^2 + 134929^2 .

It is an emirp because it is prime and its reverse (799614126221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122621416997 - 2⁸ = 122621416741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122621416297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61310708498 + 61310708499.

It is an arithmetic number, because the mean of its divisors is an integer number (61310708499).

Almost surely, 2^122621416997 is an apocalyptic number.

It is an amenable number.

122621416997 is a deficient number, since it is larger than the sum of its proper divisors (1).

122621416997 is an equidigital number, since it uses as much as digits as its factorization.

122621416997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The spelling of 122621416997 in words is "one hundred twenty-two billion, six hundred twenty-one million, four hundred sixteen thousand, nine hundred ninety-seven".