21232223330123 has 16 divisors (see below), whose sum is σ = 22944538500576. Its totient is φ = 19531284917760.

The previous prime is 21232223330111. The next prime is 21232223330161. The reversal of 21232223330123 is 32103332223212.

It is a cyclic number.

It is not a de Polignac number, because 21232223330123 - 2¹⁴ = 21232223313739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232223330623) 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, 4564211 + ... + 7955907.

It is an arithmetic number, because the mean of its divisors is an integer number (1434033656286).

Almost surely, 2^{21232223330123} is an apocalyptic number.

21232223330123 is a deficient number, since it is larger than the sum of its proper divisors (1712315170453).

21232223330123 is a wasteful number, since it uses less digits than its factorization.

21232223330123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393374.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21232223330123 its reverse (32103332223212), we get a palindrome (53335555553335).

The spelling of 21232223330123 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred twenty-three million, three hundred thirty thousand, one hundred twenty-three".