21022231323 has 8 divisors (see below), whose sum is σ = 28489144336. Its totient is φ = 13785069600.

The previous prime is 21022231303. The next prime is 21022231327. The reversal of 21022231323 is 32313222012.

It is a happy number.

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

It is not a de Polignac number, because 21022231323 - 2⁶ = 21022231259 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 21022231323.

It is not an unprimeable number, because it can be changed into a prime (21022231327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57437608 + ... + 57437973.

It is an arithmetic number, because the mean of its divisors is an integer number (3561143042).

Almost surely, 2^21022231323 is an apocalyptic number.

21022231323 is a deficient number, since it is larger than the sum of its proper divisors (7466913013).

21022231323 is a wasteful number, since it uses less digits than its factorization.

21022231323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114875645.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21022231323 its reverse (32313222012), we get a palindrome (53335453335).

The spelling of 21022231323 in words is "twenty-one billion, twenty-two million, two hundred thirty-one thousand, three hundred twenty-three".