20221231297 has 2 divisors, whose sum is σ = 20221231298. Its totient is φ = 20221231296.

The previous prime is 20221231279. The next prime is 20221231343. The reversal of 20221231297 is 79213212202.

Together with previous prime (20221231279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18879034801 + 1342196496 = 137401^2 + 36636^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221231297 - 2³¹ = 18073747649 is a prime.

It is not a weakly prime, because it can be changed into another prime (20221231097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110615648 + 10110615649.

It is an arithmetic number, because the mean of its divisors is an integer number (10110615649).

Almost surely, 2^20221231297 is an apocalyptic number.

It is an amenable number.

20221231297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221231297 is an equidigital number, since it uses as much as digits as its factorization.

20221231297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 20221231297 its reverse (79213212202), we get a palindrome (99434443499).

The spelling of 20221231297 in words is "twenty billion, two hundred twenty-one million, two hundred thirty-one thousand, two hundred ninety-seven".