2121302219 has 2 divisors, whose sum is σ = 2121302220. Its totient is φ = 2121302218.

The previous prime is 2121302171. The next prime is 2121302243. The reversal of 2121302219 is 9122031212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121302219 is a prime.

It is a super-2 number, since 2×2121302219² = 8999846208668647922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121302194 and 2121302203.

It is not a weakly prime, because it can be changed into another prime (2121302269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060651109 + 1060651110.

It is an arithmetic number, because the mean of its divisors is an integer number (1060651110).

Almost surely, 2^2121302219 is an apocalyptic number.

2121302219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121302219 is an equidigital number, since it uses as much as digits as its factorization.

2121302219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2121302219 is about 46057.5967566698. The cubic root of 2121302219 is about 1284.8946340248.

The spelling of 2121302219 in words is "two billion, one hundred twenty-one million, three hundred two thousand, two hundred nineteen".