120020100 has 36 divisors (see below), whose sum is σ = 347259024. Its totient is φ = 32005280.

The previous prime is 120020099. The next prime is 120020107. The reversal of 120020100 is 1020021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is not an unprimeable number, because it can be changed into a prime (120020107) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 199734 + ... + 200333.

It is an arithmetic number, because the mean of its divisors is an integer number (9646084).

Almost surely, 2^120020100 is an apocalyptic number.

120020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120020100 is an abundant number, since it is smaller than the sum of its proper divisors (227238924).

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

120020100 is a wasteful number, since it uses less digits than its factorization.

120020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400084 (or 400077 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 120020100 is about 10955.3685469728. The cubic root of 120020100 is about 493.2699526968.

Adding to 120020100 its reverse (1020021), we get a palindrome (121040121).

The spelling of 120020100 in words is "one hundred twenty million, twenty thousand, one hundred".