1111000111211 has 2 divisors, whose sum is σ = 1111000111212. Its totient is φ = 1111000111210.

The previous prime is 1111000111187. The next prime is 1111000111229. The reversal of 1111000111211 is 1121110001111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111000111211 is a prime.

It is a super-2 number, since 2×1111000111211² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111000111192 and 1111000111201.

It is not a weakly prime, because it can be changed into another prime (1111000111511) 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, 555500055605 + 555500055606.

It is an arithmetic number, because the mean of its divisors is an integer number (555500055606).

Almost surely, 2^{1111000111211} is an apocalyptic number.

1111000111211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111000111211 is an equidigital number, since it uses as much as digits as its factorization.

1111000111211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1111000111211 its reverse (1121110001111), we get a palindrome (2232110112322).

The spelling of 1111000111211 in words is "one trillion, one hundred eleven billion, one hundred eleven thousand, two hundred eleven".