2112197 has 4 divisors (see below), whose sum is σ = 2163756. Its totient is φ = 2060640.

The previous prime is 2112193. The next prime is 2112217. The reversal of 2112197 is 7912112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1094116 + 1018081 = 1046^2 + 1009^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112197 - 2² = 2112193 is a prime.

It is a super-2 number, since 2×2112197² = 8922752333618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112191) 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, 25718 + ... + 25799.

It is an arithmetic number, because the mean of its divisors is an integer number (540939).

2^2112197 is an apocalyptic number.

It is an amenable number.

2112197 is a deficient number, since it is larger than the sum of its proper divisors (51559).

2112197 is an equidigital number, since it uses as much as digits as its factorization.

2112197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51558.

The product of its digits is 252, while the sum is 23.

The square root of 2112197 is about 1453.3399464681. The cubic root of 2112197 is about 128.3053622441.

The spelling of 2112197 in words is "two million, one hundred twelve thousand, one hundred ninety-seven".