21132003002223 has 4 divisors (see below), whose sum is σ = 28176004002968. Its totient is φ = 14088002001480.

The previous prime is 21132003002177. The next prime is 21132003002237. The reversal of 21132003002223 is 32220030023112.

It is a happy number.

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

It is not a de Polignac number, because 21132003002223 - 2¹⁰ = 21132003001199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21132003002223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132003002273) 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, 3522000500368 + ... + 3522000500373.

It is an arithmetic number, because the mean of its divisors is an integer number (7044001000742).

Almost surely, 2^{21132003002223} is an apocalyptic number.

21132003002223 is a deficient number, since it is larger than the sum of its proper divisors (7044001000745).

21132003002223 is an equidigital number, since it uses as much as digits as its factorization.

21132003002223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7044001000744.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21132003002223 its reverse (32220030023112), we get a palindrome (53352033025335).

The spelling of 21132003002223 in words is "twenty-one trillion, one hundred thirty-two billion, three million, two thousand, two hundred twenty-three".