2112221109 has 16 divisors (see below), whose sum is σ = 2893812480. Its totient is φ = 1369425600.

The previous prime is 2112221107. The next prime is 2112221113. The reversal of 2112221109 is 9011222112.

It is not a de Polignac number, because 2112221109 - 2¹ = 2112221107 is a prime.

It is a super-2 number, since 2×2112221109² = 8922956026610379762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112221107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343159 + ... + 349259.

It is an arithmetic number, because the mean of its divisors is an integer number (180863280).

Almost surely, 2^2112221109 is an apocalyptic number.

It is an amenable number.

2112221109 is a deficient number, since it is larger than the sum of its proper divisors (781591371).

2112221109 is a wasteful number, since it uses less digits than its factorization.

2112221109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9260.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2112221109 is about 45958.9067428719. The cubic root of 2112221109 is about 1283.0585040918.

The spelling of 2112221109 in words is "two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred nine".