221214032 has 20 divisors (see below), whose sum is σ = 461572020. Its totient is φ = 102098688.

The previous prime is 221213987. The next prime is 221214043. The reversal of 221214032 is 230412122.

It can be written as a sum of positive squares in 2 ways, for example, as 54700816 + 166513216 = 7396^2 + 12904^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221214032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531557 + ... + 531972.

It is an arithmetic number, because the mean of its divisors is an integer number (23078601).

Almost surely, 2^221214032 is an apocalyptic number.

It is an amenable number.

221214032 is an abundant number, since it is smaller than the sum of its proper divisors (240357988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221214032 is a wasteful number, since it uses less digits than its factorization.

221214032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063550 (or 1063544 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 221214032 is about 14873.2656804079. The cubic root of 221214032 is about 604.7894739123.

Adding to 221214032 its reverse (230412122), we get a palindrome (451626154).

The spelling of 221214032 in words is "two hundred twenty-one million, two hundred fourteen thousand, thirty-two".