21322012303 has 4 divisors (see below), whose sum is σ = 21324284968. Its totient is φ = 21319739640.

The previous prime is 21322012279. The next prime is 21322012331. The reversal of 21322012303 is 30321022312.

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 21322012303 - 2⁹ = 21322011791 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 (21322012373) 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, 1122201 + ... + 1141042.

It is an arithmetic number, because the mean of its divisors is an integer number (5331071242).

Almost surely, 2^21322012303 is an apocalyptic number.

21322012303 is a deficient number, since it is larger than the sum of its proper divisors (2272665).

21322012303 is an equidigital number, since it uses as much as digits as its factorization.

21322012303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272664.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21322012303 its reverse (30321022312), we get a palindrome (51643034615).

The spelling of 21322012303 in words is "twenty-one billion, three hundred twenty-two million, twelve thousand, three hundred three".