22191105 has 16 divisors (see below), whose sum is σ = 35564544. Its totient is φ = 11815680.

The previous prime is 22191101. The next prime is 22191163. The reversal of 22191105 is 50119122.

It is not a de Polignac number, because 22191105 - 2² = 22191101 is a prime.

It is a super-2 number, since 2×22191105² = 984890282242050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22191101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15625 + ... + 16985.

It is an arithmetic number, because the mean of its divisors is an integer number (2222784).

Almost surely, 2^22191105 is an apocalyptic number.

It is an amenable number.

22191105 is a deficient number, since it is larger than the sum of its proper divisors (13373439).

22191105 is a wasteful number, since it uses less digits than its factorization.

22191105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 22191105 is about 4710.7435718791. The cubic root of 22191105 is about 281.0129340602.

The spelling of 22191105 in words is "twenty-two million, one hundred ninety-one thousand, one hundred five".