22110491 has 4 divisors (see below), whose sum is σ = 23811312. Its totient is φ = 20409672.

The previous prime is 22110449. The next prime is 22110503. The reversal of 22110491 is 19401122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22110491 is a prime.

It is a super-2 number, since 2×22110491² = 977747624522162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22110401) 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 3 ways as a sum of consecutive naturals, for example, 850391 + ... + 850416.

It is an arithmetic number, because the mean of its divisors is an integer number (5952828).

Almost surely, 2^22110491 is an apocalyptic number.

22110491 is a deficient number, since it is larger than the sum of its proper divisors (1700821).

22110491 is a wasteful number, since it uses less digits than its factorization.

22110491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700820.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 22110491 is about 4702.1793883262. The cubic root of 22110491 is about 280.6722410437.

The spelling of 22110491 in words is "twenty-two million, one hundred ten thousand, four hundred ninety-one".