21322231223 has 8 divisors (see below), whose sum is σ = 21532746240. Its totient is φ = 21111924600.

The previous prime is 21322231193. The next prime is 21322231247. The reversal of 21322231223 is 32213222312.

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

It is a cyclic number.

It is not a de Polignac number, because 21322231223 - 2¹⁴ = 21322214839 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 (21322231253) 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, 157688 + ... + 259826.

It is an arithmetic number, because the mean of its divisors is an integer number (2691593280).

Almost surely, 2^21322231223 is an apocalyptic number.

21322231223 is a deficient number, since it is larger than the sum of its proper divisors (210515017).

21322231223 is a wasteful number, since it uses less digits than its factorization.

21322231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104197.

The product of its digits is 1728, while the sum is 23.

Adding to 21322231223 its reverse (32213222312), we get a palindrome (53535453535).

The spelling of 21322231223 in words is "twenty-one billion, three hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty-three".