100001120 has 24 divisors (see below), whose sum is σ = 236253024. Its totient is φ = 40000384.

The previous prime is 100001119. The next prime is 100001131. The reversal of 100001120 is 21100001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312344 + ... + 312663.

It is an arithmetic number, because the mean of its divisors is an integer number (9843876).

Almost surely, 2^100001120 is an apocalyptic number.

100001120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001120 is an abundant number, since it is smaller than the sum of its proper divisors (136251904).

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

100001120 is an equidigital number, since it uses as much as digits as its factorization.

100001120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625022 (or 625014 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 100001120 is about 10000.0559998432. The cubic root of 100001120 is about 464.1606162146.

Adding to 100001120 its reverse (21100001), we get a palindrome (121101121).

The spelling of 100001120 in words is "one hundred million, one thousand, one hundred twenty".