20322123331 has 2 divisors, whose sum is σ = 20322123332. Its totient is φ = 20322123330.

The previous prime is 20322123329. The next prime is 20322123337. The reversal of 20322123331 is 13332122302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20322123331 - 2¹ = 20322123329 is a prime.

It is a super-2 number, since 2×20322123331² (a number of 21 digits) contains 22 as substring.

Together with 20322123329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20322123337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161061665 + 10161061666.

It is an arithmetic number, because the mean of its divisors is an integer number (10161061666).

Almost surely, 2^20322123331 is an apocalyptic number.

20322123331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322123331 is an equidigital number, since it uses as much as digits as its factorization.

20322123331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20322123331 its reverse (13332122302), we get a palindrome (33654245633).

The spelling of 20322123331 in words is "twenty billion, three hundred twenty-two million, one hundred twenty-three thousand, three hundred thirty-one".