21032222323 has 12 divisors (see below), whose sum is σ = 24475496760. Its totient is φ = 18020661792.

The previous prime is 21032222249. The next prime is 21032222347. The reversal of 21032222323 is 32322223012.

It is a de Polignac number, because none of the positive numbers 2^k-21032222323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21032222294 and 21032222303.

It is not an unprimeable number, because it can be changed into a prime (21032222383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47508 + ... + 210526.

It is an arithmetic number, because the mean of its divisors is an integer number (2039624730).

Almost surely, 2^21032222323 is an apocalyptic number.

21032222323 is a deficient number, since it is larger than the sum of its proper divisors (3443274437).

21032222323 is a wasteful number, since it uses less digits than its factorization.

21032222323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165666 (or 165659 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21032222323 its reverse (32322223012), we get a palindrome (53354445335).

The spelling of 21032222323 in words is "twenty-one billion, thirty-two million, two hundred twenty-two thousand, three hundred twenty-three".