118221741 has 16 divisors (see below), whose sum is σ = 191065920. Its totient is φ = 71649360.

The previous prime is 118221739. The next prime is 118221751. The reversal of 118221741 is 147122811.

It is not a de Polignac number, because 118221741 - 2¹ = 118221739 is a prime.

It is a super-4 number, since 4×118221741⁴ (a number of 33 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118221751) 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 in 15 ways as a sum of consecutive naturals, for example, 198730 + ... + 199323.

It is an arithmetic number, because the mean of its divisors is an integer number (11941620).

Almost surely, 2^118221741 is an apocalyptic number.

118221741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118221741 is a deficient number, since it is larger than the sum of its proper divisors (72844179).

118221741 is a wasteful number, since it uses less digits than its factorization.

118221741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398073 (or 398067 counting only the distinct ones).

The product of its digits is 896, while the sum is 27.

The square root of 118221741 is about 10872.9821576235. The cubic root of 118221741 is about 490.7938554715.

The spelling of 118221741 in words is "one hundred eighteen million, two hundred twenty-one thousand, seven hundred forty-one".