1115067217 has 4 divisors (see below), whose sum is σ = 1216436976. Its totient is φ = 1013697460.

The previous prime is 1115067211. The next prime is 1115067221. The reversal of 1115067217 is 7127605111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7127605111 = 11 ⋅647964101.

It is a cyclic number.

It is not a de Polignac number, because 1115067217 - 2²⁷ = 980849489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115067211) 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, 50684863 + ... + 50684884.

It is an arithmetic number, because the mean of its divisors is an integer number (304109244).

Almost surely, 2^1115067217 is an apocalyptic number.

It is an amenable number.

1115067217 is a deficient number, since it is larger than the sum of its proper divisors (101369759).

1115067217 is a wasteful number, since it uses less digits than its factorization.

1115067217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101369758.

The product of its (nonzero) digits is 2940, while the sum is 31.

The square root of 1115067217 is about 33392.6221941314. The cubic root of 1115067217 is about 1036.9719666940.

The spelling of 1115067217 in words is "one billion, one hundred fifteen million, sixty-seven thousand, two hundred seventeen".