21332302223 has 4 divisors (see below), whose sum is σ = 22259793648. Its totient is φ = 20404810800.

The previous prime is 21332302217. The next prime is 21332302249. The reversal of 21332302223 is 32220323312.

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 21332302223 - 2⁴ = 21332302207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 927491401 = 21332302223 / (2 + 1 + 3 + 3 + 2 + 3 + 0 + 2 + 2 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332301223) 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, 463745678 + ... + 463745723.

It is an arithmetic number, because the mean of its divisors is an integer number (5564948412).

Almost surely, 2^21332302223 is an apocalyptic number.

21332302223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21332302223 is a deficient number, since it is larger than the sum of its proper divisors (927491425).

21332302223 is an equidigital number, since it uses as much as digits as its factorization.

21332302223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927491424.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21332302223 its reverse (32220323312), we get a palindrome (53552625535).

The spelling of 21332302223 in words is "twenty-one billion, three hundred thirty-two million, three hundred two thousand, two hundred twenty-three".