21232010223 has 20 divisors (see below), whose sum is σ = 32030995128. Its totient is φ = 14014522800.

The previous prime is 21232010203. The next prime is 21232010231. The reversal of 21232010223 is 32201023212.

It is not a de Polignac number, because 21232010223 - 2¹³ = 21232002031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21232010196 and 21232010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232010203) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1289461 + ... + 1305822.

Almost surely, 2^21232010223 is an apocalyptic number.

21232010223 is a deficient number, since it is larger than the sum of its proper divisors (10798984905).

21232010223 is a wasteful number, since it uses less digits than its factorization.

21232010223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595396 (or 2595387 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21232010223 its reverse (32201023212), we get a palindrome (53433033435).

The spelling of 21232010223 in words is "twenty-one billion, two hundred thirty-two million, ten thousand, two hundred twenty-three".