122621367221 has 2 divisors, whose sum is σ = 122621367222. Its totient is φ = 122621367220.

The previous prime is 122621367179. The next prime is 122621367241. The reversal of 122621367221 is 122763126221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121372804996 + 1248562225 = 348386^2 + 35335^2 .

It is a cyclic number.

It is not a de Polignac number, because 122621367221 - 2⁶ = 122621367157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122621367241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61310683610 + 61310683611.

It is an arithmetic number, because the mean of its divisors is an integer number (61310683611).

Almost surely, 2^122621367221 is an apocalyptic number.

It is an amenable number.

122621367221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122621367221 is an equidigital number, since it uses as much as digits as its factorization.

122621367221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The spelling of 122621367221 in words is "one hundred twenty-two billion, six hundred twenty-one million, three hundred sixty-seven thousand, two hundred twenty-one".