20323123230121 has 4 divisors (see below), whose sum is σ = 20567980136592. Its totient is φ = 20078266323652.

The previous prime is 20323123230103. The next prime is 20323123230133. The reversal of 20323123230121 is 12103232132302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20323123230121 - 2⁵ = 20323123230089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20323123230181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122428453111 + ... + 122428453276.

It is an arithmetic number, because the mean of its divisors is an integer number (5141995034148).

Almost surely, 2^{20323123230121} is an apocalyptic number.

It is an amenable number.

20323123230121 is a deficient number, since it is larger than the sum of its proper divisors (244856906471).

20323123230121 is an equidigital number, since it uses as much as digits as its factorization.

20323123230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244856906470.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20323123230121 its reverse (12103232132302), we get a palindrome (32426355362423).

The spelling of 20323123230121 in words is "twenty trillion, three hundred twenty-three billion, one hundred twenty-three million, two hundred thirty thousand, one hundred twenty-one".