112101421 has 4 divisors (see below), whose sum is σ = 114835644. Its totient is φ = 109367200.

The previous prime is 112101401. The next prime is 112101427. The reversal of 112101421 is 124101211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124101211 = 13 ⋅9546247.

It can be written as a sum of positive squares in 2 ways, for example, as 6320196 + 105781225 = 2514^2 + 10285^2 .

It is a cyclic number.

It is not a de Polignac number, because 112101421 - 2¹⁵ = 112068653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112101427) 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 3 ways as a sum of consecutive naturals, for example, 1367050 + ... + 1367131.

It is an arithmetic number, because the mean of its divisors is an integer number (28708911).

Almost surely, 2^112101421 is an apocalyptic number.

It is an amenable number.

112101421 is a deficient number, since it is larger than the sum of its proper divisors (2734223).

112101421 is an equidigital number, since it uses as much as digits as its factorization.

112101421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734222.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 112101421 is about 10587.7958518287. The cubic root of 112101421 is about 482.1739083661.

Adding to 112101421 its reverse (124101211), we get a palindrome (236202632).

The spelling of 112101421 in words is "one hundred twelve million, one hundred one thousand, four hundred twenty-one".