21223322313 has 4 divisors (see below), whose sum is σ = 28297763088. Its totient is φ = 14148881540.

The previous prime is 21223322273. The next prime is 21223322347. The reversal of 21223322313 is 31322332212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21223322313 - 2⁶ = 21223322249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21223322353) 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, 3537220383 + ... + 3537220388.

It is an arithmetic number, because the mean of its divisors is an integer number (7074440772).

Almost surely, 2^21223322313 is an apocalyptic number.

It is an amenable number.

21223322313 is a deficient number, since it is larger than the sum of its proper divisors (7074440775).

21223322313 is an equidigital number, since it uses as much as digits as its factorization.

21223322313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074440774.

The product of its digits is 2592, while the sum is 24.

Adding to 21223322313 its reverse (31322332212), we get a palindrome (52545654525).

The spelling of 21223322313 in words is "twenty-one billion, two hundred twenty-three million, three hundred twenty-two thousand, three hundred thirteen".