1121115011 has 4 divisors (see below), whose sum is σ = 1121538672. Its totient is φ = 1120691352.

The previous prime is 1121114999. The next prime is 1121115019. The reversal of 1121115011 is 1105111211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1105111211 = 547 ⋅2020313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121115011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121115019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207836 + ... + 213161.

It is an arithmetic number, because the mean of its divisors is an integer number (280384668).

Almost surely, 2^1121115011 is an apocalyptic number.

1121115011 is a deficient number, since it is larger than the sum of its proper divisors (423661).

1121115011 is an equidigital number, since it uses as much as digits as its factorization.

1121115011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423660.

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

The square root of 1121115011 is about 33483.0555803977. The cubic root of 1121115011 is about 1038.8433303585.

Adding to 1121115011 its reverse (1105111211), we get a palindrome (2226226222).

The spelling of 1121115011 in words is "one billion, one hundred twenty-one million, one hundred fifteen thousand, eleven".