112100121 has 24 divisors (see below), whose sum is σ = 190059584. Its totient is φ = 62324640.

The previous prime is 112100111. The next prime is 112100143. The reversal of 112100121 is 121001211.

It is a happy number.

It is not a de Polignac number, because 112100121 - 2⁹ = 112099609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (112100111) 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 23 ways as a sum of consecutive naturals, for example, 21715 + ... + 26376.

Almost surely, 2^112100121 is an apocalyptic number.

It is an amenable number.

112100121 is a deficient number, since it is larger than the sum of its proper divisors (77959463).

112100121 is a wasteful number, since it uses less digits than its factorization.

112100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48141 (or 48138 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 112100121 is about 10587.7344602139. The cubic root of 112100121 is about 482.1720444929.

Adding to 112100121 its reverse (121001211), we get a palindrome (233101332).

The spelling of 112100121 in words is "one hundred twelve million, one hundred thousand, one hundred twenty-one".