112401021 has 4 divisors (see below), whose sum is σ = 149868032. Its totient is φ = 74934012.

The previous prime is 112401001. The next prime is 112401031. The reversal of 112401021 is 120104211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-112401021 is a prime.

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 = 112400988 and 112401006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112401001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18733501 + ... + 18733506.

It is an arithmetic number, because the mean of its divisors is an integer number (37467008).

Almost surely, 2^112401021 is an apocalyptic number.

It is an amenable number.

112401021 is a deficient number, since it is larger than the sum of its proper divisors (37467011).

112401021 is an equidigital number, since it uses as much as digits as its factorization.

112401021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37467010.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 112401021 is about 10601.9347762566. The cubic root of 112401021 is about 482.6030756903.

Adding to 112401021 its reverse (120104211), we get a palindrome (232505232).

The spelling of 112401021 in words is "one hundred twelve million, four hundred one thousand, twenty-one".