21322230023 has 4 divisors (see below), whose sum is σ = 21333448248. Its totient is φ = 21311011800.

The previous prime is 21322229993. The next prime is 21322230037. The reversal of 21322230023 is 32003222312.

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 21322230023 - 2¹² = 21322225927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21322229977 and 21322230004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322230073) 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, 5606261 + ... + 5610062.

It is an arithmetic number, because the mean of its divisors is an integer number (5333362062).

Almost surely, 2^21322230023 is an apocalyptic number.

21322230023 is a deficient number, since it is larger than the sum of its proper divisors (11218225).

21322230023 is a wasteful number, since it uses less digits than its factorization.

21322230023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11218224.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21322230023 its reverse (32003222312), we get a palindrome (53325452335).

The spelling of 21322230023 in words is "twenty-one billion, three hundred twenty-two million, two hundred thirty thousand, twenty-three".