422661121 has 2 divisors, whose sum is σ = 422661122. Its totient is φ = 422661120.

The previous prime is 422661097. The next prime is 422661143. The reversal of 422661121 is 121166224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420701121 + 1960000 = 20511^2 + 1400^2 .

It is a cyclic number.

It is not a de Polignac number, because 422661121 - 2¹⁹ = 422136833 is a prime.

It is not a weakly prime, because it can be changed into another prime (422661181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211330560 + 211330561.

It is an arithmetic number, because the mean of its divisors is an integer number (211330561).

Almost surely, 2^422661121 is an apocalyptic number.

It is an amenable number.

422661121 is a deficient number, since it is larger than the sum of its proper divisors (1).

422661121 is an equidigital number, since it uses as much as digits as its factorization.

422661121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

The square root of 422661121 is about 20558.7237201145. The cubic root of 422661121 is about 750.4655604263.

The spelling of 422661121 in words is "four hundred twenty-two million, six hundred sixty-one thousand, one hundred twenty-one".