22191123 has 8 divisors (see below), whose sum is σ = 29804688. Its totient is φ = 14685824.

The previous prime is 22191101. The next prime is 22191163. The reversal of 22191123 is 32119122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22191123 - 2⁹ = 22190611 is a prime.

It is a super-3 number, since 3×22191123³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 22191123.

It is not an unprimeable number, because it can be changed into a prime (22191163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26586 + ... + 27407.

It is an arithmetic number, because the mean of its divisors is an integer number (3725586).

Almost surely, 2^22191123 is an apocalyptic number.

22191123 is a deficient number, since it is larger than the sum of its proper divisors (7613565).

22191123 is a wasteful number, since it uses less digits than its factorization.

22191123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54133.

The product of its digits is 216, while the sum is 21.

The square root of 22191123 is about 4710.7454824051. The cubic root of 22191123 is about 281.0130100400.

The spelling of 22191123 in words is "twenty-two million, one hundred ninety-one thousand, one hundred twenty-three".