12212021219 has 2 divisors, whose sum is σ = 12212021220. Its totient is φ = 12212021218.

The previous prime is 12212021207. The next prime is 12212021279. The reversal of 12212021219 is 91212021221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12212021219 - 2⁸ = 12212020963 is a prime.

It is a super-2 number, since 2×12212021219² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12212021194 and 12212021203.

It is not a weakly prime, because it can be changed into another prime (12212021279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106010609 + 6106010610.

It is an arithmetic number, because the mean of its divisors is an integer number (6106010610).

Almost surely, 2^12212021219 is an apocalyptic number.

12212021219 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212021219 is an equidigital number, since it uses as much as digits as its factorization.

12212021219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 12212021219 in words is "twelve billion, two hundred twelve million, twenty-one thousand, two hundred nineteen".