21320141223 has 8 divisors (see below), whose sum is σ = 28432192768. Its totient is φ = 14210758584.

The previous prime is 21320141179. The next prime is 21320141233. The reversal of 21320141223 is 32214102312.

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

It is not a de Polignac number, because 21320141223 - 2¹⁰ = 21320140199 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 21320141223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320141233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648511 + ... + 680592.

It is an arithmetic number, because the mean of its divisors is an integer number (3554024096).

Almost surely, 2^21320141223 is an apocalyptic number.

21320141223 is a deficient number, since it is larger than the sum of its proper divisors (7112051545).

21320141223 is a wasteful number, since it uses less digits than its factorization.

21320141223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334453.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21320141223 its reverse (32214102312), we get a palindrome (53534243535).

The spelling of 21320141223 in words is "twenty-one billion, three hundred twenty million, one hundred forty-one thousand, two hundred twenty-three".