2121221119 has 4 divisors (see below), whose sum is σ = 2132212096. Its totient is φ = 2110230144.

The previous prime is 2121221111. The next prime is 2121221129. The reversal of 2121221119 is 9111221212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121221119 - 2³ = 2121221111 is a prime.

It is a super-2 number, since 2×2121221119² = 8999158071383224322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121221119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121221111) 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 3 ways as a sum of consecutive naturals, for example, 5495199 + ... + 5495584.

It is an arithmetic number, because the mean of its divisors is an integer number (533053024).

Almost surely, 2^2121221119 is an apocalyptic number.

2121221119 is a deficient number, since it is larger than the sum of its proper divisors (10990977).

2121221119 is a wasteful number, since it uses less digits than its factorization.

2121221119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10990976.

The product of its digits is 144, while the sum is 22.

The square root of 2121221119 is about 46056.7163288917. The cubic root of 2121221119 is about 1284.8782594473.

The spelling of 2121221119 in words is "two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred nineteen".