11217277889 has 8 divisors (see below), whose sum is σ = 11480496768. Its totient is φ = 10955082160.

The previous prime is 11217277873. The next prime is 11217277919. The reversal of 11217277889 is 98877271211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11217277889 - 2⁴ = 11217277873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11217277889.

It is not an unprimeable number, because it can be changed into a prime (11217277189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233582 + ... + 277479.

It is an arithmetic number, because the mean of its divisors is an integer number (1435062096).

Almost surely, 2^11217277889 is an apocalyptic number.

It is an amenable number.

11217277889 is a deficient number, since it is larger than the sum of its proper divisors (263218879).

11217277889 is an equidigital number, since it uses as much as digits as its factorization.

11217277889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511575.

The product of its digits is 790272, while the sum is 53.

The spelling of 11217277889 in words is "eleven billion, two hundred seventeen million, two hundred seventy-seven thousand, eight hundred eighty-nine".