21322314143 has 4 divisors (see below), whose sum is σ = 22962492168. Its totient is φ = 19682136120.

The previous prime is 21322314131. The next prime is 21322314161. The reversal of 21322314143 is 34141322312.

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 21322314143 - 2⁴ = 21322314127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322314193) 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, 820088993 + ... + 820089018.

It is an arithmetic number, because the mean of its divisors is an integer number (5740623042).

Almost surely, 2^21322314143 is an apocalyptic number.

21322314143 is a deficient number, since it is larger than the sum of its proper divisors (1640178025).

21322314143 is a wasteful number, since it uses less digits than its factorization.

21322314143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640178024.

The product of its digits is 3456, while the sum is 26.

Adding to 21322314143 its reverse (34141322312), we get a palindrome (55463636455).

The spelling of 21322314143 in words is "twenty-one billion, three hundred twenty-two million, three hundred fourteen thousand, one hundred forty-three".