116621100 has 144 divisors (see below), whose sum is σ = 383308800. Its totient is φ = 30404160.

The previous prime is 116621027. The next prime is 116621129. The reversal of 116621100 is 1126611.

116621100 is a `hidden beast` number, since 1 + 1 + 662 + 1 + 1 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126441 + ... + 127359.

Almost surely, 2^116621100 is an apocalyptic number.

116621100 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 116621100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191654400).

116621100 is an abundant number, since it is smaller than the sum of its proper divisors (266687700).

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

116621100 is a wasteful number, since it uses less digits than its factorization.

116621100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 116621100 is about 10799.1249645515. The cubic root of 116621100 is about 488.5687793903.

Adding to 116621100 its reverse (1126611), we get a palindrome (117747711).

The spelling of 116621100 in words is "one hundred sixteen million, six hundred twenty-one thousand, one hundred".