21222332323 has 4 divisors (see below), whose sum is σ = 22145042448. Its totient is φ = 20299622200.

The previous prime is 21222332281. The next prime is 21222332371. The reversal of 21222332323 is 32323322212.

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 21222332323 - 2⁹ = 21222331811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222330323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461355028 + ... + 461355073.

It is an arithmetic number, because the mean of its divisors is an integer number (5536260612).

Almost surely, 2^21222332323 is an apocalyptic number.

21222332323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21222332323 is a deficient number, since it is larger than the sum of its proper divisors (922710125).

21222332323 is an equidigital number, since it uses as much as digits as its factorization.

21222332323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922710124.

The product of its digits is 5184, while the sum is 25.

Adding to 21222332323 its reverse (32323322212), we get a palindrome (53545654535).

The spelling of 21222332323 in words is "twenty-one billion, two hundred twenty-two million, three hundred thirty-two thousand, three hundred twenty-three".