21332323023 has 16 divisors (see below), whose sum is σ = 31554748800. Its totient is φ = 12709549280.

The previous prime is 21332323007. The next prime is 21332323069. The reversal of 21332323023 is 32032323312.

It is a cyclic number.

It is not a de Polignac number, because 21332323023 - 2⁴ = 21332323007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21332322984 and 21332323002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332323073) 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, 5476308 + ... + 5480201.

It is an arithmetic number, because the mean of its divisors is an integer number (1972171800).

Almost surely, 2^21332323023 is an apocalyptic number.

21332323023 is a deficient number, since it is larger than the sum of its proper divisors (10222425777).

21332323023 is a wasteful number, since it uses less digits than its factorization.

21332323023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10956582.

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21332323023 its reverse (32032323312), we get a palindrome (53364646335).

The spelling of 21332323023 in words is "twenty-one billion, three hundred thirty-two million, three hundred twenty-three thousand, twenty-three".