112144021 has 16 divisors (see below), whose sum is σ = 130387968. Its totient is φ = 95431600.

The previous prime is 112143973. The next prime is 112144027. The reversal of 112144021 is 120441211.

It is a happy number.

It is not a de Polignac number, because 112144021 - 2¹⁹ = 111619733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112143986 and 112144004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112144027) 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, 7176 + ... + 16606.

It is an arithmetic number, because the mean of its divisors is an integer number (8149248).

Almost surely, 2^112144021 is an apocalyptic number.

112144021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112144021 is a deficient number, since it is larger than the sum of its proper divisors (18243947).

112144021 is a wasteful number, since it uses less digits than its factorization.

112144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9512.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 112144021 is about 10589.8074109022. The cubic root of 112144021 is about 482.2349780860.

Adding to 112144021 its reverse (120441211), we get a palindrome (232585232).

The spelling of 112144021 in words is "one hundred twelve million, one hundred forty-four thousand, twenty-one".