118222187 has 2 divisors, whose sum is σ = 118222188. Its totient is φ = 118222186.

The previous prime is 118222073. The next prime is 118222193. The reversal of 118222187 is 781222811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118222187 - 2¹⁴ = 118205803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118222787) 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, 59111093 + 59111094.

It is an arithmetic number, because the mean of its divisors is an integer number (59111094).

Almost surely, 2^118222187 is an apocalyptic number.

118222187 is a deficient number, since it is larger than the sum of its proper divisors (1).

118222187 is an equidigital number, since it uses as much as digits as its factorization.

118222187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 32.

The square root of 118222187 is about 10873.0026671569. The cubic root of 118222187 is about 490.7944726558.

Adding to 118222187 its reverse (781222811), we get a palindrome (899444998).

The spelling of 118222187 in words is "one hundred eighteen million, two hundred twenty-two thousand, one hundred eighty-seven".