11212519999 has 2 divisors, whose sum is σ = 11212520000. Its totient is φ = 11212519998.

The previous prime is 11212519991. The next prime is 11212520003. The reversal of 11212519999 is 99991521211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11212519999 - 2³ = 11212519991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212519991) 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, 5606259999 + 5606260000.

It is an arithmetic number, because the mean of its divisors is an integer number (5606260000).

Almost surely, 2^11212519999 is an apocalyptic number.

11212519999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212519999 is an equidigital number, since it uses as much as digits as its factorization.

11212519999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 49.

The spelling of 11212519999 in words is "eleven billion, two hundred twelve million, five hundred nineteen thousand, nine hundred ninety-nine".