23221321297 has 2 divisors, whose sum is σ = 23221321298. Its totient is φ = 23221321296.

The previous prime is 23221321267. The next prime is 23221321313. The reversal of 23221321297 is 79212312232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21632820561 + 1588500736 = 147081^2 + 39856^2 .

It is a cyclic number.

It is not a de Polignac number, because 23221321297 - 2³¹ = 21073837649 is a prime.

It is not a weakly prime, because it can be changed into another prime (23221321247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610660648 + 11610660649.

It is an arithmetic number, because the mean of its divisors is an integer number (11610660649).

Almost surely, 2^23221321297 is an apocalyptic number.

It is an amenable number.

23221321297 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221321297 is an equidigital number, since it uses as much as digits as its factorization.

23221321297 is an evil number, because the sum of its binary digits is even.

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

The spelling of 23221321297 in words is "twenty-three billion, two hundred twenty-one million, three hundred twenty-one thousand, two hundred ninety-seven".