2121013219 has 4 divisors (see below), whose sum is σ = 2284168096. Its totient is φ = 1957858344.

The previous prime is 2121013199. The next prime is 2121013253. The reversal of 2121013219 is 9123101212.

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

It is not a de Polignac number, because 2121013219 - 2¹⁷ = 2120882147 is a prime.

It is a super-2 number, since 2×2121013219² = 8997394150345483922, 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 2121013219.

It is not an unprimeable number, because it can be changed into a prime (2121013259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81577419 + ... + 81577444.

It is an arithmetic number, because the mean of its divisors is an integer number (571042024).

Almost surely, 2^2121013219 is an apocalyptic number.

2121013219 is a deficient number, since it is larger than the sum of its proper divisors (163154877).

2121013219 is a wasteful number, since it uses less digits than its factorization.

2121013219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163154876.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 2121013219 is about 46054.4592737772. The cubic root of 2121013219 is about 1284.8362812812.

The spelling of 2121013219 in words is "two billion, one hundred twenty-one million, thirteen thousand, two hundred nineteen".