22191315 has 16 divisors (see below), whose sum is σ = 35748000. Its totient is φ = 11754752.

The previous prime is 22191287. The next prime is 22191329. The reversal of 22191315 is 51319122.

It is a cyclic number.

It is not a de Polignac number, because 22191315 - 2⁷ = 22191187 is a prime.

It is a super-2 number, since 2×22191315² = 984908922858450, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2730 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (2234250).

Almost surely, 2^22191315 is an apocalyptic number.

22191315 is a deficient number, since it is larger than the sum of its proper divisors (13556685).

22191315 is a wasteful number, since it uses less digits than its factorization.

22191315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10086.

The product of its digits is 540, while the sum is 24.

The square root of 22191315 is about 4710.7658613011. The cubic root of 22191315 is about 281.0138204894.

The spelling of 22191315 in words is "twenty-two million, one hundred ninety-one thousand, three hundred fifteen".