21322475315 has 8 divisors (see below), whose sum is σ = 26069743728. Its totient is φ = 16736131360.

The previous prime is 21322475281. The next prime is 21322475323. The reversal of 21322475315 is 51357422312.

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

It is not a de Polignac number, because 21322475315 - 2²⁰ = 21321426739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40230821 + ... + 40231350.

It is an arithmetic number, because the mean of its divisors is an integer number (3258717966).

Almost surely, 2^21322475315 is an apocalyptic number.

21322475315 is a deficient number, since it is larger than the sum of its proper divisors (4747268413).

21322475315 is an equidigital number, since it uses as much as digits as its factorization.

21322475315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80462229.

The product of its digits is 50400, while the sum is 35.

Adding to 21322475315 its reverse (51357422312), we get a palindrome (72679897627).

The spelling of 21322475315 in words is "twenty-one billion, three hundred twenty-two million, four hundred seventy-five thousand, three hundred fifteen".