11111131219211 has 2 divisors, whose sum is σ = 11111131219212. Its totient is φ = 11111131219210.

The previous prime is 11111131219189. The next prime is 11111131219319. The reversal of 11111131219211 is 11291213111111.

It is a m-pointer prime, because the next prime (11111131219319) can be obtained adding 11111131219211 to its product of digits (108).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111131219211 is a prime.

It is a super-3 number, since 3×11111131219211³ (a number of 40 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11111131219711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555565609605 + 5555565609606.

It is an arithmetic number, because the mean of its divisors is an integer number (5555565609606).

Almost surely, 2^{11111131219211} is an apocalyptic number.

11111131219211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111131219211 is an equidigital number, since it uses as much as digits as its factorization.

11111131219211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 26.

The spelling of 11111131219211 in words is "eleven trillion, one hundred eleven billion, one hundred thirty-one million, two hundred nineteen thousand, two hundred eleven".