22121243315 has 4 divisors (see below), whose sum is σ = 26545491984. Its totient is φ = 17696994648.

The previous prime is 22121243281. The next prime is 22121243321. The reversal of 22121243315 is 51334212122.

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 22121243315 - 2³² = 17826276019 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2212124327 + ... + 2212124336.

It is an arithmetic number, because the mean of its divisors is an integer number (6636372996).

Almost surely, 2^22121243315 is an apocalyptic number.

22121243315 is a deficient number, since it is larger than the sum of its proper divisors (4424248669).

22121243315 is an equidigital number, since it uses as much as digits as its factorization.

22121243315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4424248668.

The product of its digits is 2880, while the sum is 26.

Adding to 22121243315 its reverse (51334212122), we get a palindrome (73455455437).

The spelling of 22121243315 in words is "twenty-two billion, one hundred twenty-one million, two hundred forty-three thousand, three hundred fifteen".