22082215 has 4 divisors (see below), whose sum is σ = 26498664. Its totient is φ = 17665768.

The previous prime is 22082213. The next prime is 22082257. The reversal of 22082215 is 51228022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51228022 = 2 ⋅25614011.

It is a cyclic number.

It is not a de Polignac number, because 22082215 - 2¹ = 22082213 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 (22082213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2208217 + ... + 2208226.

It is an arithmetic number, because the mean of its divisors is an integer number (6624666).

Almost surely, 2^22082215 is an apocalyptic number.

22082215 is a deficient number, since it is larger than the sum of its proper divisors (4416449).

22082215 is an equidigital number, since it uses as much as digits as its factorization.

22082215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416448.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 22082215 is about 4699.1717355296. The cubic root of 22082215 is about 280.5525441119.

The spelling of 22082215 in words is "twenty-two million, eighty-two thousand, two hundred fifteen".