1115211011 has 2 divisors, whose sum is σ = 1115211012. Its totient is φ = 1115211010.

The previous prime is 1115210983. The next prime is 1115211059. The reversal of 1115211011 is 1101125111.

It is a weak prime.

It is an emirp because it is prime and its reverse (1101125111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115211011 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1115210011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557605505 + 557605506.

It is an arithmetic number, because the mean of its divisors is an integer number (557605506).

Almost surely, 2^1115211011 is an apocalyptic number.

1115211011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115211011 is an equidigital number, since it uses as much as digits as its factorization.

1115211011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10, while the sum is 14.

The square root of 1115211011 is about 33394.7752051126. The cubic root of 1115211011 is about 1037.0165391752.

Adding to 1115211011 its reverse (1101125111), we get a palindrome (2216336122).

The spelling of 1115211011 in words is "one billion, one hundred fifteen million, two hundred eleven thousand, eleven".