22120055 has 8 divisors (see below), whose sum is σ = 26586144. Its totient is φ = 17668000.

The previous prime is 22120031. The next prime is 22120057. The reversal of 22120055 is 55002122.

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

It is not a de Polignac number, because 22120055 - 2¹² = 22115959 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 (22120057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350 + ... + 6660.

It is an arithmetic number, because the mean of its divisors is an integer number (3323268).

Almost surely, 2^22120055 is an apocalyptic number.

22120055 is a deficient number, since it is larger than the sum of its proper divisors (4466089).

22120055 is an equidigital number, since it uses as much as digits as its factorization.

22120055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7017.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 22120055 is about 4703.1962536131. The cubic root of 22120055 is about 280.7127039226.

Adding to 22120055 its reverse (55002122), we get a palindrome (77122177).

The spelling of 22120055 in words is "twenty-two million, one hundred twenty thousand, fifty-five".