20123210297 has 2 divisors, whose sum is σ = 20123210298. Its totient is φ = 20123210296.

The previous prime is 20123210269. The next prime is 20123210309. The reversal of 20123210297 is 79201232102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19425669376 + 697540921 = 139376^2 + 26411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20123210297 is a prime.

It is not a weakly prime, because it can be changed into another prime (20123210257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061605148 + 10061605149.

It is an arithmetic number, because the mean of its divisors is an integer number (10061605149).

Almost surely, 2^20123210297 is an apocalyptic number.

It is an amenable number.

20123210297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123210297 is an equidigital number, since it uses as much as digits as its factorization.

20123210297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 20123210297 its reverse (79201232102), we get a palindrome (99324442399).

The spelling of 20123210297 in words is "twenty billion, one hundred twenty-three million, two hundred ten thousand, two hundred ninety-seven".