2121202219 has 4 divisors (see below), whose sum is σ = 2148052960. Its totient is φ = 2094351480.

The previous prime is 2121202211. The next prime is 2121202231. The reversal of 2121202219 is 9122021212.

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 2121202219 - 2³ = 2121202211 is a prime.

It is a super-2 number, since 2×2121202219² = 8998997707781047922, 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 2121202219.

It is not an unprimeable number, because it can be changed into a prime (2121202211) 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, 13425252 + ... + 13425409.

It is an arithmetic number, because the mean of its divisors is an integer number (537013240).

Almost surely, 2^2121202219 is an apocalyptic number.

2121202219 is a deficient number, since it is larger than the sum of its proper divisors (26850741).

2121202219 is an equidigital number, since it uses as much as digits as its factorization.

2121202219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26850740.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2121202219 is about 46056.5111466338. The cubic root of 2121202219 is about 1284.8744433638.

The spelling of 2121202219 in words is "two billion, one hundred twenty-one million, two hundred two thousand, two hundred nineteen".