21322343102423 has 32 divisors (see below), whose sum is σ = 24083932981248. Its totient is φ = 18701831836800.

The previous prime is 21322343102323. The next prime is 21322343102443. The reversal of 21322343102423 is 32420134322312.

It is a cyclic number.

It is not a de Polignac number, because 21322343102423 - 2¹² = 21322343098327 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 21322343102423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322343102443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151456061 + ... + 151596777.

It is an arithmetic number, because the mean of its divisors is an integer number (752622905664).

Almost surely, 2^{21322343102423} is an apocalyptic number.

21322343102423 is a deficient number, since it is larger than the sum of its proper divisors (2761589878825).

21322343102423 is a wasteful number, since it uses less digits than its factorization.

21322343102423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142103.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 21322343102423 its reverse (32420134322312), we get a palindrome (53742477424735).

The spelling of 21322343102423 in words is "twenty-one trillion, three hundred twenty-two billion, three hundred forty-three million, one hundred two thousand, four hundred twenty-three".