21322322311 has 4 divisors (see below), whose sum is σ = 21614408992. Its totient is φ = 21030235632.

The previous prime is 21322322309. The next prime is 21322322317. The reversal of 21322322311 is 11322322312.

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 21322322311 - 2¹ = 21322322309 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 (21322322317) 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, 146043231 + ... + 146043376.

It is an arithmetic number, because the mean of its divisors is an integer number (5403602248).

Almost surely, 2^21322322311 is an apocalyptic number.

21322322311 is a deficient number, since it is larger than the sum of its proper divisors (292086681).

21322322311 is an equidigital number, since it uses as much as digits as its factorization.

21322322311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292086680.

The product of its digits is 864, while the sum is 22.

Adding to 21322322311 its reverse (11322322312), we get a palindrome (32644644623).

Subtracting from 21322322311 its reverse (11322322312), we obtain a palindrome (9999999999).

The spelling of 21322322311 in words is "twenty-one billion, three hundred twenty-two million, three hundred twenty-two thousand, three hundred eleven".