22111249 has 4 divisors (see below), whose sum is σ = 22359780. Its totient is φ = 21862720.

The previous prime is 22111241. The next prime is 22111267. The reversal of 22111249 is 94211122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2689600 + 19421649 = 1640^2 + 4407^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111249 - 2³ = 22111241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124132 + ... + 124309.

It is an arithmetic number, because the mean of its divisors is an integer number (5589945).

Almost surely, 2^22111249 is an apocalyptic number.

It is an amenable number.

22111249 is a deficient number, since it is larger than the sum of its proper divisors (248531).

22111249 is an equidigital number, since it uses as much as digits as its factorization.

22111249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248530.

The product of its digits is 288, while the sum is 22.

The square root of 22111249 is about 4702.2599885587. The cubic root of 22111249 is about 280.6754483768.

The spelling of 22111249 in words is "twenty-two million, one hundred eleven thousand, two hundred forty-nine".