20123320003123 has 16 divisors (see below), whose sum is σ = 20923072634016. Its totient is φ = 19338962319360.

The previous prime is 20123320003121. The next prime is 20123320003133. The reversal of 20123320003123 is 32130002332102.

It is a cyclic number.

It is not a de Polignac number, because 20123320003123 - 2¹ = 20123320003121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123320003094 and 20123320003103.

It is not an unprimeable number, because it can be changed into a prime (20123320003121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1916086 + ... + 6627067.

It is an arithmetic number, because the mean of its divisors is an integer number (1307692039626).

Almost surely, 2^{20123320003123} is an apocalyptic number.

20123320003123 is a deficient number, since it is larger than the sum of its proper divisors (799752630893).

20123320003123 is an equidigital number, since it uses as much as digits as its factorization.

20123320003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8544054.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20123320003123 its reverse (32130002332102), we get a palindrome (52253322335225).

The spelling of 20123320003123 in words is "twenty trillion, one hundred twenty-three billion, three hundred twenty million, three thousand, one hundred twenty-three".