21233023303123 has 16 divisors (see below), whose sum is σ = 22549956677280. Its totient is φ = 19966834457856.

The previous prime is 21233023303117. The next prime is 21233023303133. The reversal of 21233023303123 is 32130332033212.

It is a cyclic number.

It is not a de Polignac number, because 21233023303123 - 2¹⁷ = 21233023172051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21233023303091 and 21233023303100.

It is not an unprimeable number, because it can be changed into a prime (21233023303133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80671978 + ... + 80934751.

It is an arithmetic number, because the mean of its divisors is an integer number (1409372292330).

Almost surely, 2^{21233023303123} is an apocalyptic number.

21233023303123 is a deficient number, since it is larger than the sum of its proper divisors (1316933374157).

21233023303123 is a wasteful number, since it uses less digits than its factorization.

21233023303123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161606886.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 21233023303123 its reverse (32130332033212), we get a palindrome (53363355336335).

The spelling of 21233023303123 in words is "twenty-one trillion, two hundred thirty-three billion, twenty-three million, three hundred three thousand, one hundred twenty-three".