22115315 has 4 divisors (see below), whose sum is σ = 26538384. Its totient is φ = 17692248.

The previous prime is 22115311. The next prime is 22115329. The reversal of 22115315 is 51351122.

It is a happy number.

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 22115315 - 2² = 22115311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22115311) 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, 2211527 + ... + 2211536.

It is an arithmetic number, because the mean of its divisors is an integer number (6634596).

Almost surely, 2^22115315 is an apocalyptic number.

22115315 is a deficient number, since it is larger than the sum of its proper divisors (4423069).

22115315 is an equidigital number, since it uses as much as digits as its factorization.

22115315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423068.

The product of its digits is 300, while the sum is 20.

The square root of 22115315 is about 4702.6923139836. The cubic root of 22115315 is about 280.6926516327.

Adding to 22115315 its reverse (51351122), we get a palindrome (73466437).

The spelling of 22115315 in words is "twenty-two million, one hundred fifteen thousand, three hundred fifteen".