22181444407 has 4 divisors (see below), whose sum is σ = 22599962280. Its totient is φ = 21762926536.

The previous prime is 22181444381. The next prime is 22181444423. The reversal of 22181444407 is 70444418122.

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

It is a cyclic number.

It is not a de Polignac number, because 22181444407 - 2³¹ = 20033960759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22181484407) 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, 209258857 + ... + 209258962.

It is an arithmetic number, because the mean of its divisors is an integer number (5649990570).

Almost surely, 2^22181444407 is an apocalyptic number.

22181444407 is a deficient number, since it is larger than the sum of its proper divisors (418517873).

22181444407 is an equidigital number, since it uses as much as digits as its factorization.

22181444407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418517872.

The product of its (nonzero) digits is 57344, while the sum is 37.

The spelling of 22181444407 in words is "twenty-two billion, one hundred eighty-one million, four hundred forty-four thousand, four hundred seven".