120220100 has 144 divisors (see below), whose sum is σ = 350560896. Its totient is φ = 34560000.

The previous prime is 120220099. The next prime is 120220117. The reversal of 120220100 is 1022021.

Added to its reverse (1022021) it gives a square (121242121 = 11011²).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99500 + ... + 100700.

Almost surely, 2^120220100 is an apocalyptic number.

120220100 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 120220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175280448).

120220100 is an abundant number, since it is smaller than the sum of its proper divisors (230340796).

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

120220100 is a wasteful number, since it uses less digits than its factorization.

120220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 120220100 is about 10964.4926923228. The cubic root of 120220100 is about 493.5437936135.

Adding to 120220100 its reverse (1022021), we get a palindrome (121242121).

The spelling of 120220100 in words is "one hundred twenty million, two hundred twenty thousand, one hundred".