20022431123 has 2 divisors, whose sum is σ = 20022431124. Its totient is φ = 20022431122.

The previous prime is 20022431089. The next prime is 20022431129. The reversal of 20022431123 is 32113422002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022431123 is a prime.

It is a super-2 number, since 2×20022431123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20022431095 and 20022431104.

It is not a weakly prime, because it can be changed into another prime (20022431129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011215561 + 10011215562.

It is an arithmetic number, because the mean of its divisors is an integer number (10011215562).

Almost surely, 2^20022431123 is an apocalyptic number.

20022431123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022431123 is an equidigital number, since it uses as much as digits as its factorization.

20022431123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20022431123 its reverse (32113422002), we get a palindrome (52135853125).

The spelling of 20022431123 in words is "twenty billion, twenty-two million, four hundred thirty-one thousand, one hundred twenty-three".