123221298269 has 2 divisors, whose sum is σ = 123221298270. Its totient is φ = 123221298268.

The previous prime is 123221298247. The next prime is 123221298289. The reversal of 123221298269 is 962892122321.

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., 122493000100 + 728298169 = 349990^2 + 26987^2 .

It is a cyclic number.

It is not a de Polignac number, because 123221298269 - 2¹⁶ = 123221232733 is a prime.

It is a super-2 number, since 2×123221298269² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123221298229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610649134 + 61610649135.

It is an arithmetic number, because the mean of its divisors is an integer number (61610649135).

Almost surely, 2^123221298269 is an apocalyptic number.

It is an amenable number.

123221298269 is a deficient number, since it is larger than the sum of its proper divisors (1).

123221298269 is an equidigital number, since it uses as much as digits as its factorization.

123221298269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The spelling of 123221298269 in words is "one hundred twenty-three billion, two hundred twenty-one million, two hundred ninety-eight thousand, two hundred sixty-nine".