22220117 has 2 divisors, whose sum is σ = 22220118. Its totient is φ = 22220116.

The previous prime is 22220113. The next prime is 22220131. The reversal of 22220117 is 71102222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19704721 + 2515396 = 4439^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220117 - 2² = 22220113 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22220095 and 22220104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22220113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110058 + 11110059.

It is an arithmetic number, because the mean of its divisors is an integer number (11110059).

Almost surely, 2^22220117 is an apocalyptic number.

It is an amenable number.

22220117 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220117 is an equidigital number, since it uses as much as digits as its factorization.

22220117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 22220117 is about 4713.8219100853. The cubic root of 22220117 is about 281.1353434209.

Adding to 22220117 its reverse (71102222), we get a palindrome (93322339).

The spelling of 22220117 in words is "twenty-two million, two hundred twenty thousand, one hundred seventeen".