12122221219 has 2 divisors, whose sum is σ = 12122221220. Its totient is φ = 12122221218.

The previous prime is 12122221151. The next prime is 12122221259. The reversal of 12122221219 is 91212222121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12122221219 - 2¹¹ = 12122219171 is a prime.

It is a super-2 number, since 2×12122221219² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12122221193 and 12122221202.

It is not a weakly prime, because it can be changed into another prime (12122221259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061110609 + 6061110610.

It is an arithmetic number, because the mean of its divisors is an integer number (6061110610).

Almost surely, 2^12122221219 is an apocalyptic number.

12122221219 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122221219 is an equidigital number, since it uses as much as digits as its factorization.

12122221219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 25.

The spelling of 12122221219 in words is "twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred nineteen".