20123230443001 has 4 divisors (see below), whose sum is σ = 22997977649152. Its totient is φ = 17248483236852.

The previous prime is 20123230442999. The next prime is 20123230443023. The reversal of 20123230443001 is 10034403232102.

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 not a de Polignac number, because 20123230443001 - 2¹ = 20123230442999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123230443101) 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, 1437373603065 + ... + 1437373603078.

It is an arithmetic number, because the mean of its divisors is an integer number (5749494412288).

Almost surely, 2^{20123230443001} is an apocalyptic number.

It is an amenable number.

20123230443001 is a deficient number, since it is larger than the sum of its proper divisors (2874747206151).

20123230443001 is an equidigital number, since it uses as much as digits as its factorization.

20123230443001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874747206150.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20123230443001 its reverse (10034403232102), we get a palindrome (30157633675103).

The spelling of 20123230443001 in words is "twenty trillion, one hundred twenty-three billion, two hundred thirty million, four hundred forty-three thousand, one".