22117427 has 2 divisors, whose sum is σ = 22117428. Its totient is φ = 22117426.

The previous prime is 22117399. The next prime is 22117439. The reversal of 22117427 is 72471122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22117427 - 2⁸ = 22117171 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22117396 and 22117405.

It is not a weakly prime, because it can be changed into another prime (22117727) 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 as a sum of consecutive naturals, namely, 11058713 + 11058714.

It is an arithmetic number, because the mean of its divisors is an integer number (11058714).

Almost surely, 2^22117427 is an apocalyptic number.

22117427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22117427 is an equidigital number, since it uses as much as digits as its factorization.

22117427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 26.

The square root of 22117427 is about 4702.9168608429. The cubic root of 22117427 is about 280.7015866778.

Adding to 22117427 its reverse (72471122), we get a palindrome (94588549).

The spelling of 22117427 in words is "twenty-two million, one hundred seventeen thousand, four hundred twenty-seven".