221559013 has 8 divisors (see below), whose sum is σ = 239065568. Its totient is φ = 204118704.

The previous prime is 221558963. The next prime is 221559029. The reversal of 221559013 is 310955122.

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 221559013 - 2²¹ = 219461861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221559413) 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, 9495 + ... + 23092.

It is an arithmetic number, because the mean of its divisors is an integer number (29883196).

Almost surely, 2^221559013 is an apocalyptic number.

It is an amenable number.

221559013 is a deficient number, since it is larger than the sum of its proper divisors (17506555).

221559013 is a wasteful number, since it uses less digits than its factorization.

221559013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33123.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 221559013 is about 14884.8585146114. The cubic root of 221559013 is about 605.1036982734.

The spelling of 221559013 in words is "two hundred twenty-one million, five hundred fifty-nine thousand, thirteen".