122409434221 has 2 divisors, whose sum is σ = 122409434222. Its totient is φ = 122409434220.

The previous prime is 122409434183. The next prime is 122409434249. The reversal of 122409434221 is 122434904221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62083197225 + 60326236996 = 249165^2 + 245614^2 .

It is a cyclic number.

It is not a de Polignac number, because 122409434221 - 2³¹ = 120261950573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122409434261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61204717110 + 61204717111.

It is an arithmetic number, because the mean of its divisors is an integer number (61204717111).

Almost surely, 2^122409434221 is an apocalyptic number.

It is an amenable number.

122409434221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122409434221 is an equidigital number, since it uses as much as digits as its factorization.

122409434221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 122409434221 in words is "one hundred twenty-two billion, four hundred nine million, four hundred thirty-four thousand, two hundred twenty-one".