118522100 has 72 divisors (see below), whose sum is σ = 267566208. Its totient is φ = 45532800.

The previous prime is 118522097. The next prime is 118522139. The reversal of 118522100 is 1225811.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 380945 + ... + 381255.

Almost surely, 2^118522100 is an apocalyptic number.

118522100 is a gapful number since it is divisible by the number (10) 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 118522100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133783104).

118522100 is an abundant number, since it is smaller than the sum of its proper divisors (149044108).

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

118522100 is a wasteful number, since it uses less digits than its factorization.

118522100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 118522100 is about 10886.7855678341. The cubic root of 118522100 is about 491.2091476279.

Adding to 118522100 its reverse (1225811), we get a palindrome (119747911).

The spelling of 118522100 in words is "one hundred eighteen million, five hundred twenty-two thousand, one hundred".