11221689 has 8 divisors (see below), whose sum is σ = 15046560. Its totient is φ = 7438976.

The previous prime is 11221669. The next prime is 11221697. The reversal of 11221689 is 98612211.

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 11221689 - 2⁵ = 11221657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221669) 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, 9912 + ... + 10985.

It is an arithmetic number, because the mean of its divisors is an integer number (1880820).

Almost surely, 2^11221689 is an apocalyptic number.

It is an amenable number.

11221689 is a deficient number, since it is larger than the sum of its proper divisors (3824871).

11221689 is a wasteful number, since it uses less digits than its factorization.

11221689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21079.

The product of its digits is 1728, while the sum is 30.

The square root of 11221689 is about 3349.8789530370. The cubic root of 11221689 is about 223.8821193640.

The spelling of 11221689 in words is "eleven million, two hundred twenty-one thousand, six hundred eighty-nine".