22401117 has 10 divisors (see below), whose sum is σ = 33463518. Its totient is φ = 14934024.

The previous prime is 22401109. The next prime is 22401143. The reversal of 22401117 is 71110422.

It can be written as a sum of positive squares in only one way, i.e., 20169081 + 2232036 = 4491^2 + 1494^2 .

It is not a de Polignac number, because 22401117 - 2³ = 22401109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22401117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401157) 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 9 ways as a sum of consecutive naturals, for example, 138198 + ... + 138359.

Almost surely, 2^22401117 is an apocalyptic number.

22401117 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22401117 is a deficient number, since it is larger than the sum of its proper divisors (11062401).

22401117 is an equidigital number, since it uses as much as digits as its factorization.

22401117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276569 (or 276560 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 22401117 is about 4732.9818296714. The cubic root of 22401117 is about 281.8966348194.

Adding to 22401117 its reverse (71110422), we get a palindrome (93511539).

The spelling of 22401117 in words is "twenty-two million, four hundred one thousand, one hundred seventeen".