20230421297 has 2 divisors, whose sum is σ = 20230421298. Its totient is φ = 20230421296.

The previous prime is 20230421293. The next prime is 20230421303. The reversal of 20230421297 is 79212403202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15890115136 + 4340306161 = 126056^2 + 65881^2 .

It is a cyclic number.

It is not a de Polignac number, because 20230421297 - 2² = 20230421293 is a prime.

It is a super-2 number, since 2×20230421297² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20230421293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115210648 + 10115210649.

It is an arithmetic number, because the mean of its divisors is an integer number (10115210649).

Almost surely, 2^20230421297 is an apocalyptic number.

It is an amenable number.

20230421297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20230421297 is an equidigital number, since it uses as much as digits as its factorization.

20230421297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 20230421297 its reverse (79212403202), we get a palindrome (99442824499).

The spelling of 20230421297 in words is "twenty billion, two hundred thirty million, four hundred twenty-one thousand, two hundred ninety-seven".