12191122519 has 2 divisors, whose sum is σ = 12191122520. Its totient is φ = 12191122518.

The previous prime is 12191122507. The next prime is 12191122583. The reversal of 12191122519 is 91522119121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12191122519 - 2¹⁵ = 12191089751 is a prime.

It is a super-2 number, since 2×12191122519² (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 (12191120519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6095561259 + 6095561260.

It is an arithmetic number, because the mean of its divisors is an integer number (6095561260).

Almost surely, 2^12191122519 is an apocalyptic number.

12191122519 is a deficient number, since it is larger than the sum of its proper divisors (1).

12191122519 is an equidigital number, since it uses as much as digits as its factorization.

12191122519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 34.

The spelling of 12191122519 in words is "twelve billion, one hundred ninety-one million, one hundred twenty-two thousand, five hundred nineteen".