123221320297 has 2 divisors, whose sum is σ = 123221320298. Its totient is φ = 123221320296.

The previous prime is 123221320283. The next prime is 123221320319. The reversal of 123221320297 is 792023122321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117330911296 + 5890409001 = 342536^2 + 76749^2 .

It is a cyclic number.

It is not a de Polignac number, because 123221320297 - 2¹⁵ = 123221287529 is a prime.

It is not a weakly prime, because it can be changed into another prime (123221320237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610660148 + 61610660149.

It is an arithmetic number, because the mean of its divisors is an integer number (61610660149).

Almost surely, 2^123221320297 is an apocalyptic number.

It is an amenable number.

123221320297 is a deficient number, since it is larger than the sum of its proper divisors (1).

123221320297 is an equidigital number, since it uses as much as digits as its factorization.

123221320297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 123221320297 in words is "one hundred twenty-three billion, two hundred twenty-one million, three hundred twenty thousand, two hundred ninety-seven".