221214603 has 8 divisors (see below), whose sum is σ = 295675600. Its totient is φ = 147115008.

The previous prime is 221214593. The next prime is 221214607. The reversal of 221214603 is 306412122.

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

It is not a de Polignac number, because 221214603 - 2⁸ = 221214347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221214603.

It is not an unprimeable number, because it can be changed into a prime (221214607) 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, 88918 + ... + 91371.

It is an arithmetic number, because the mean of its divisors is an integer number (36959450).

Almost surely, 2^221214603 is an apocalyptic number.

221214603 is a deficient number, since it is larger than the sum of its proper divisors (74460997).

221214603 is a wasteful number, since it uses less digits than its factorization.

221214603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180701.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 221214603 is about 14873.2848759109. The cubic root of 221214603 is about 604.7899942749.

Adding to 221214603 its reverse (306412122), we get a palindrome (527626725).

The spelling of 221214603 in words is "two hundred twenty-one million, two hundred fourteen thousand, six hundred three".