12011220019 has 2 divisors, whose sum is σ = 12011220020. Its totient is φ = 12011220018.

The previous prime is 12011220017. The next prime is 12011220073. The reversal of 12011220019 is 91002211021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12011220019 - 2¹ = 12011220017 is a prime.

It is a super-2 number, since 2×12011220019² (a number of 21 digits) contains 22 as substring.

Together with 12011220017, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12011219978 and 12011220005.

It is not a weakly prime, because it can be changed into another prime (12011220017) 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 as a sum of consecutive naturals, namely, 6005610009 + 6005610010.

It is an arithmetic number, because the mean of its divisors is an integer number (6005610010).

Almost surely, 2^12011220019 is an apocalyptic number.

12011220019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011220019 is an equidigital number, since it uses as much as digits as its factorization.

12011220019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 12011220019 in words is "twelve billion, eleven million, two hundred twenty thousand, nineteen".