112110021 has 16 divisors (see below), whose sum is σ = 166523200. Its totient is φ = 74544624.

The previous prime is 112110017. The next prime is 112110071. The reversal of 112110021 is 120011211.

It is a happy number.

It is not a de Polignac number, because 112110021 - 2² = 112110017 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 a junction number, because it is equal to n+sod(n) for n = 112109985 and 112110012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112110001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5490 + ... + 15948.

It is an arithmetic number, because the mean of its divisors is an integer number (10407700).

Almost surely, 2^112110021 is an apocalyptic number.

It is an amenable number.

112110021 is a deficient number, since it is larger than the sum of its proper divisors (54413179).

112110021 is a wasteful number, since it uses less digits than its factorization.

112110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10865 (or 10859 counting only the distinct ones).

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

The square root of 112110021 is about 10588.2019720064. The cubic root of 112110021 is about 482.1862382413.

Adding to 112110021 its reverse (120011211), we get a palindrome (232121232).

The spelling of 112110021 in words is "one hundred twelve million, one hundred ten thousand, twenty-one".