21132133223 has 8 divisors (see below), whose sum is σ = 22057509600. Its totient is φ = 20207305888.

The previous prime is 21132133219. The next prime is 21132133247. The reversal of 21132133223 is 32233123112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21132133223 - 2² = 21132133219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132133213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57608 + ... + 213501.

It is an arithmetic number, because the mean of its divisors is an integer number (2757188700).

Almost surely, 2^21132133223 is an apocalyptic number.

21132133223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21132133223 is a deficient number, since it is larger than the sum of its proper divisors (925376377).

21132133223 is a wasteful number, since it uses less digits than its factorization.

21132133223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274521.

The product of its digits is 1296, while the sum is 23.

Adding to 21132133223 its reverse (32233123112), we get a palindrome (53365256335).

The spelling of 21132133223 in words is "twenty-one billion, one hundred thirty-two million, one hundred thirty-three thousand, two hundred twenty-three".