22145105 has 8 divisors (see below), whose sum is σ = 26628264. Its totient is φ = 17680000.

The previous prime is 22145099. The next prime is 22145107. The reversal of 22145105 is 50154122.

It can be written as a sum of positive squares in 4 ways, for example, as 26896 + 22118209 = 164^2 + 4703^2 .

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

It is not a de Polignac number, because 22145105 - 2¹⁴ = 22128721 is a prime.

It is a super-2 number, since 2×22145105² = 980811350922050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22145107) 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, 1646 + ... + 6855.

It is an arithmetic number, because the mean of its divisors is an integer number (3328533).

Almost surely, 2^22145105 is an apocalyptic number.

It is an amenable number.

22145105 is a deficient number, since it is larger than the sum of its proper divisors (4483159).

22145105 is an equidigital number, since it uses as much as digits as its factorization.

22145105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9027.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 22145105 is about 4705.8585826606. The cubic root of 22145105 is about 280.8186289227.

Adding to 22145105 its reverse (50154122), we get a palindrome (72299227).

The spelling of 22145105 in words is "twenty-two million, one hundred forty-five thousand, one hundred five".