1115112211 has 2 divisors, whose sum is σ = 1115112212. Its totient is φ = 1115112210.

The previous prime is 1115112149. The next prime is 1115112227. The reversal of 1115112211 is 1122115111.

It is an a-pointer prime, because the next prime (1115112227) can be obtained adding 1115112211 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1115112211 - 2¹¹ = 1115110163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115112281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557556105 + 557556106.

It is an arithmetic number, because the mean of its divisors is an integer number (557556106).

Almost surely, 2^1115112211 is an apocalyptic number.

1115112211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115112211 is an equidigital number, since it uses as much as digits as its factorization.

1115112211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20, while the sum is 16.

The square root of 1115112211 is about 33393.2958990274. The cubic root of 1115112211 is about 1036.9859141010.

Adding to 1115112211 its reverse (1122115111), we get a palindrome (2237227322).

The spelling of 1115112211 in words is "one billion, one hundred fifteen million, one hundred twelve thousand, two hundred eleven".