221317113 has 8 divisors (see below), whose sum is σ = 295826976. Its totient is φ = 147176000.

The previous prime is 221317099. The next prime is 221317121. The reversal of 221317113 is 311713122.

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 221317113 - 2⁴ = 221317097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221317113.

It is not an unprimeable number, because it can be changed into a prime (221317123) 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, 90783 + ... + 93188.

It is an arithmetic number, because the mean of its divisors is an integer number (36978372).

Almost surely, 2^221317113 is an apocalyptic number.

It is an amenable number.

221317113 is a deficient number, since it is larger than the sum of its proper divisors (74509863).

221317113 is a wasteful number, since it uses less digits than its factorization.

221317113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184375.

The product of its digits is 252, while the sum is 21.

The square root of 221317113 is about 14876.7305884055. The cubic root of 221317113 is about 604.8833989711.

The spelling of 221317113 in words is "two hundred twenty-one million, three hundred seventeen thousand, one hundred thirteen".