118222128 has 60 divisors (see below), whose sum is σ = 333110128. Its totient is φ = 39139200.

The previous prime is 118222073. The next prime is 118222187. The reversal of 118222128 is 821222811.

It is a Cunningham number, because it is equal to 10873²-1.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19026 + ... + 24462.

Almost surely, 2^118222128 is an apocalyptic number.

118222128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118222128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166555064).

118222128 is an abundant number, since it is smaller than the sum of its proper divisors (214888000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118222128 is a wasteful number, since it uses less digits than its factorization.

118222128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602 (or 5593 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 118222128 is about 10872.9999540145. Note that the first 4 decimals coincide. The cubic root of 118222128 is about 490.7943910104.

Adding to 118222128 its reverse (821222811), we get a palindrome (939444939).

The spelling of 118222128 in words is "one hundred eighteen million, two hundred twenty-two thousand, one hundred twenty-eight".