12012091919 has 2 divisors, whose sum is σ = 12012091920. Its totient is φ = 12012091918.

The previous prime is 12012091867. The next prime is 12012091937. The reversal of 12012091919 is 91919021021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12012091919 - 2¹² = 12012087823 is a prime.

It is a super-2 number, since 2×12012091919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012091979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006045959 + 6006045960.

It is an arithmetic number, because the mean of its divisors is an integer number (6006045960).

Almost surely, 2^12012091919 is an apocalyptic number.

12012091919 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012091919 is an equidigital number, since it uses as much as digits as its factorization.

12012091919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 12012091919 in words is "twelve billion, twelve million, ninety-one thousand, nine hundred nineteen".