20023320023123 has 4 divisors (see below), whose sum is σ = 20669233572288. Its totient is φ = 19377406473960.

The previous prime is 20023320023107. The next prime is 20023320023171. The reversal of 20023320023123 is 32132002332002.

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

It is a cyclic number.

It is not a de Polignac number, because 20023320023123 - 2⁴ = 20023320023107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20023320023323) 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 in 3 ways as a sum of consecutive naturals, for example, 322956774536 + ... + 322956774597.

It is an arithmetic number, because the mean of its divisors is an integer number (5167308393072).

Almost surely, 2^{20023320023123} is an apocalyptic number.

20023320023123 is a deficient number, since it is larger than the sum of its proper divisors (645913549165).

20023320023123 is an equidigital number, since it uses as much as digits as its factorization.

20023320023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645913549164.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20023320023123 its reverse (32132002332002), we get a palindrome (52155322355125).

The spelling of 20023320023123 in words is "twenty trillion, twenty-three billion, three hundred twenty million, twenty-three thousand, one hundred twenty-three".