20022131023 has 4 divisors (see below), whose sum is σ = 20022690168. Its totient is φ = 20021571880.

The previous prime is 20022131009. The next prime is 20022131039. The reversal of 20022131023 is 32013122002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022131023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20022130988 and 20022131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020131023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221893 + ... + 298798.

It is an arithmetic number, because the mean of its divisors is an integer number (5005672542).

Almost surely, 2^20022131023 is an apocalyptic number.

20022131023 is a deficient number, since it is larger than the sum of its proper divisors (559145).

20022131023 is an equidigital number, since it uses as much as digits as its factorization.

20022131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559144.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20022131023 its reverse (32013122002), we get a palindrome (52035253025).

The spelling of 20022131023 in words is "twenty billion, twenty-two million, one hundred thirty-one thousand, twenty-three".