122263621 has 2 divisors, whose sum is σ = 122263622. Its totient is φ = 122263620.

The previous prime is 122263619. The next prime is 122263637. The reversal of 122263621 is 126362221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114254721 + 8008900 = 10689^2 + 2830^2 .

It is a cyclic number.

It is not a de Polignac number, because 122263621 - 2¹ = 122263619 is a prime.

Together with 122263619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122264621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61131810 + 61131811.

It is an arithmetic number, because the mean of its divisors is an integer number (61131811).

Almost surely, 2^122263621 is an apocalyptic number.

It is an amenable number.

122263621 is a deficient number, since it is larger than the sum of its proper divisors (1).

122263621 is an equidigital number, since it uses as much as digits as its factorization.

122263621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 122263621 is about 11057.2881395033. The cubic root of 122263621 is about 496.3245428991.

The spelling of 122263621 in words is "one hundred twenty-two million, two hundred sixty-three thousand, six hundred twenty-one".