1117212065 has 16 divisors (see below), whose sum is σ = 1414782720. Its totient is φ = 844588800.

The previous prime is 1117212017. The next prime is 1117212101. The reversal of 1117212065 is 5602127111.

It is not a de Polignac number, because 1117212065 - 2¹⁶ = 1117146529 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23432 + ... + 52758.

It is an arithmetic number, because the mean of its divisors is an integer number (88423920).

Almost surely, 2^1117212065 is an apocalyptic number.

It is an amenable number.

1117212065 is a deficient number, since it is larger than the sum of its proper divisors (297570655).

1117212065 is a wasteful number, since it uses less digits than its factorization.

1117212065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29752.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 1117212065 is about 33424.7223623473. The cubic root of 1117212065 is about 1037.6364177325.

Adding to 1117212065 its reverse (5602127111), we get a palindrome (6719339176).

The spelling of 1117212065 in words is "one billion, one hundred seventeen million, two hundred twelve thousand, sixty-five".