120101100 has 72 divisors (see below), whose sum is σ = 397141248. Its totient is φ = 27451200.

The previous prime is 120101089. The next prime is 120101119. The reversal of 120101100 is 1101021.

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 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 23 ways as a sum of consecutive naturals, for example, 26496 + ... + 30695.

Almost surely, 2^120101100 is an apocalyptic number.

120101100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120101100 is an abundant number, since it is smaller than the sum of its proper divisors (277040148).

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

120101100 is a wasteful number, since it uses less digits than its factorization.

120101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57215 (or 57208 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 120101100 is about 10959.0647411173. The cubic root of 120101100 is about 493.3808948951.

Adding to 120101100 its reverse (1101021), we get a palindrome (121202121).

The spelling of 120101100 in words is "one hundred twenty million, one hundred one thousand, one hundred".