20020231123123 has 12 divisors (see below), whose sum is σ = 25149381246640. Its totient is φ = 15600180095280.

The previous prime is 20020231123099. The next prime is 20020231123127. The reversal of 20020231123123 is 32132113202002.

It is a de Polignac number, because none of the positive numbers 2^k-20020231123123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020231123094 and 20020231123103.

It is not an unprimeable number, because it can be changed into a prime (20020231123127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11818317408 + ... + 11818319101.

Almost surely, 2^{20020231123123} is an apocalyptic number.

20020231123123 is a deficient number, since it is larger than the sum of its proper divisors (5129150123517).

20020231123123 is a wasteful number, since it uses less digits than its factorization.

20020231123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23636636538 (or 23636636527 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20020231123123 its reverse (32132113202002), we get a palindrome (52152344325125).

The spelling of 20020231123123 in words is "twenty trillion, twenty billion, two hundred thirty-one million, one hundred twenty-three thousand, one hundred twenty-three".