20024223397 has 2 divisors, whose sum is σ = 20024223398. Its totient is φ = 20024223396.

The previous prime is 20024223383. The next prime is 20024223433. The reversal of 20024223397 is 79332242002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15395598241 + 4628625156 = 124079^2 + 68034^2 .

It is a cyclic number.

It is not a de Polignac number, because 20024223397 - 2¹⁵ = 20024190629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20024223097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012111698 + 10012111699.

It is an arithmetic number, because the mean of its divisors is an integer number (10012111699).

Almost surely, 2^20024223397 is an apocalyptic number.

It is an amenable number.

20024223397 is a deficient number, since it is larger than the sum of its proper divisors (1).

20024223397 is an equidigital number, since it uses as much as digits as its factorization.

20024223397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 34.

Adding to 20024223397 its reverse (79332242002), we get a palindrome (99356465399).

The spelling of 20024223397 in words is "twenty billion, twenty-four million, two hundred twenty-three thousand, three hundred ninety-seven".