221106417 has 8 divisors (see below), whose sum is σ = 336924096. Its totient is φ = 126346512.

The previous prime is 221106409. The next prime is 221106421. The reversal of 221106417 is 714601122.

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

It is not a de Polignac number, because 221106417 - 2³ = 221106409 is a prime.

It is a super-4 number, since 4×221106417⁴ (a number of 34 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (221106917) 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, 5264418 + ... + 5264459.

It is an arithmetic number, because the mean of its divisors is an integer number (42115512).

Almost surely, 2^221106417 is an apocalyptic number.

It is an amenable number.

221106417 is a deficient number, since it is larger than the sum of its proper divisors (115817679).

221106417 is a wasteful number, since it uses less digits than its factorization.

221106417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10528887.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 221106417 is about 14869.6475075908. The cubic root of 221106417 is about 604.6913864395.

Adding to 221106417 its reverse (714601122), we get a palindrome (935707539).

The spelling of 221106417 in words is "two hundred twenty-one million, one hundred six thousand, four hundred seventeen".