1117212189 has 16 divisors (see below), whose sum is σ = 1560020352. Its totient is φ = 709841088.

The previous prime is 1117212167. The next prime is 1117212199. The reversal of 1117212189 is 9812127111.

It is not a de Polignac number, because 1117212189 - 2²⁰ = 1116163613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117212199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10114 + ... + 48339.

It is an arithmetic number, because the mean of its divisors is an integer number (97501272).

Almost surely, 2^1117212189 is an apocalyptic number.

It is an amenable number.

1117212189 is a deficient number, since it is larger than the sum of its proper divisors (442808163).

1117212189 is a wasteful number, since it uses less digits than its factorization.

1117212189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58756.

The product of its digits is 2016, while the sum is 33.

The square root of 1117212189 is about 33424.7242172617. The cubic root of 1117212189 is about 1037.6364561217.

The spelling of 1117212189 in words is "one billion, one hundred seventeen million, two hundred twelve thousand, one hundred eighty-nine".