112201021 has 4 divisors (see below), whose sum is σ = 114040444. Its totient is φ = 110361600.

The previous prime is 112201013. The next prime is 112201031. The reversal of 112201021 is 120102211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120102211 = 19 ⋅6321169.

It can be written as a sum of positive squares in 2 ways, for example, as 64176121 + 48024900 = 8011^2 + 6930^2 .

It is a cyclic number.

It is not a de Polignac number, because 112201021 - 2³ = 112201013 is a prime.

It is a super-2 number, since 2×112201021² = 25178138226884882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112200989 and 112201007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112201031) 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, 919620 + ... + 919741.

It is an arithmetic number, because the mean of its divisors is an integer number (28510111).

Almost surely, 2^112201021 is an apocalyptic number.

It is an amenable number.

112201021 is a deficient number, since it is larger than the sum of its proper divisors (1839423).

112201021 is an equidigital number, since it uses as much as digits as its factorization.

112201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839422.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 112201021 is about 10592.4983360867. The cubic root of 112201021 is about 482.3166669054.

Adding to 112201021 its reverse (120102211), we get a palindrome (232303232).

The spelling of 112201021 in words is "one hundred twelve million, two hundred one thousand, twenty-one".