21332031223 has 4 divisors (see below), whose sum is σ = 21494871288. Its totient is φ = 21169191160.

The previous prime is 21332031221. The next prime is 21332031251. The reversal of 21332031223 is 32213023312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21332031223 - 2¹ = 21332031221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21332031194 and 21332031203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332031221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81419836 + ... + 81420097.

It is an arithmetic number, because the mean of its divisors is an integer number (5373717822).

Almost surely, 2^21332031223 is an apocalyptic number.

21332031223 is a deficient number, since it is larger than the sum of its proper divisors (162840065).

21332031223 is a wasteful number, since it uses less digits than its factorization.

21332031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162840064.

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

Adding to 21332031223 its reverse (32213023312), we get a palindrome (53545054535).

The spelling of 21332031223 in words is "twenty-one billion, three hundred thirty-two million, thirty-one thousand, two hundred twenty-three".