122200621 has 2 divisors, whose sum is σ = 122200622. Its totient is φ = 122200620.

The previous prime is 122200601. The next prime is 122200627. The reversal of 122200621 is 126002221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104652900 + 17547721 = 10230^2 + 4189^2 .

It is an emirp because it is prime and its reverse (126002221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122200621 - 2⁷ = 122200493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122200595 and 122200604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122200627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61100310 + 61100311.

It is an arithmetic number, because the mean of its divisors is an integer number (61100311).

Almost surely, 2^122200621 is an apocalyptic number.

It is an amenable number.

122200621 is a deficient number, since it is larger than the sum of its proper divisors (1).

122200621 is an equidigital number, since it uses as much as digits as its factorization.

122200621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 122200621 is about 11054.4389726480. The cubic root of 122200621 is about 496.2392795473.

Adding to 122200621 its reverse (126002221), we get a palindrome (248202842).

The spelling of 122200621 in words is "one hundred twenty-two million, two hundred thousand, six hundred twenty-one".