2111554511219 has 2 divisors, whose sum is σ = 2111554511220. Its totient is φ = 2111554511218.

The previous prime is 2111554511207. The next prime is 2111554511251. The reversal of 2111554511219 is 9121154551112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111554511219 - 2⁸ = 2111554510963 is a prime.

It is a super-2 number, since 2×2111554511219² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2111554511519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055777255609 + 1055777255610.

It is an arithmetic number, because the mean of its divisors is an integer number (1055777255610).

Almost surely, 2^{2111554511219} is an apocalyptic number.

2111554511219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111554511219 is an equidigital number, since it uses as much as digits as its factorization.

2111554511219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 38.

The spelling of 2111554511219 in words is "two trillion, one hundred eleven billion, five hundred fifty-four million, five hundred eleven thousand, two hundred nineteen".