221089215 has 8 divisors (see below), whose sum is σ = 353742768. Its totient is φ = 117914240.

The previous prime is 221089201. The next prime is 221089223. The reversal of 221089215 is 512980122.

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

It is not a de Polignac number, because 221089215 - 2²¹ = 218992063 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7369626 + ... + 7369655.

It is an arithmetic number, because the mean of its divisors is an integer number (44217846).

Almost surely, 2^221089215 is an apocalyptic number.

221089215 is a deficient number, since it is larger than the sum of its proper divisors (132653553).

221089215 is a wasteful number, since it uses less digits than its factorization.

221089215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14739289.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 221089215 is about 14869.0690697165. The cubic root of 221089215 is about 604.6757044418.

The spelling of 221089215 in words is "two hundred twenty-one million, eighty-nine thousand, two hundred fifteen".