2112244121 has 4 divisors (see below), whose sum is σ = 2274724452. Its totient is φ = 1949763792.

The previous prime is 2112244111. The next prime is 2112244129. The reversal of 2112244121 is 1214422112.

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 1363455625 + 748788496 = 36925^2 + 27364^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112244121 - 2¹⁰ = 2112243097 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2112244093 and 2112244102.

It is not an unprimeable number, because it can be changed into a prime (2112244129) 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, 81240146 + ... + 81240171.

It is an arithmetic number, because the mean of its divisors is an integer number (568681113).

Almost surely, 2^2112244121 is an apocalyptic number.

It is an amenable number.

2112244121 is a deficient number, since it is larger than the sum of its proper divisors (162480331).

2112244121 is a wasteful number, since it uses less digits than its factorization.

2112244121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162480330.

The product of its digits is 256, while the sum is 20.

The square root of 2112244121 is about 45959.1570962741. The cubic root of 2112244121 is about 1283.0631635842.

Adding to 2112244121 its reverse (1214422112), we get a palindrome (3326666233).

The spelling of 2112244121 in words is "two billion, one hundred twelve million, two hundred forty-four thousand, one hundred twenty-one".