22118351 has 2 divisors, whose sum is σ = 22118352. Its totient is φ = 22118350.

The previous prime is 22118347. The next prime is 22118359. The reversal of 22118351 is 15381122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22118351 - 2² = 22118347 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22118359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11059175 + 11059176.

It is an arithmetic number, because the mean of its divisors is an integer number (11059176).

Almost surely, 2^22118351 is an apocalyptic number.

22118351 is a deficient number, since it is larger than the sum of its proper divisors (1).

22118351 is an equidigital number, since it uses as much as digits as its factorization.

22118351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 23.

The square root of 22118351 is about 4703.0150967225. The cubic root of 22118351 is about 280.7054955811.

Adding to 22118351 its reverse (15381122), we get a palindrome (37499473).

The spelling of 22118351 in words is "twenty-two million, one hundred eighteen thousand, three hundred fifty-one".