221032243 has 8 divisors (see below), whose sum is σ = 222713280. Its totient is φ = 219356520.

The previous prime is 221032241. The next prime is 221032261. The reversal of 221032243 is 342230122.

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 221032243 - 2¹ = 221032241 is a prime.

It is a super-2 number, since 2×221032243² = 97710504891222098, which contains 22 as substring.

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 221032243.

It is not an unprimeable number, because it can be changed into a prime (221032241) 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, 122796 + ... + 124582.

It is an arithmetic number, because the mean of its divisors is an integer number (27839160).

Almost surely, 2^221032243 is an apocalyptic number.

221032243 is a deficient number, since it is larger than the sum of its proper divisors (1681037).

221032243 is a wasteful number, since it uses less digits than its factorization.

221032243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 221032243 is about 14867.1531572120. The cubic root of 221032243 is about 604.6237607898.

Adding to 221032243 its reverse (342230122), we get a palindrome (563262365).

It can be divided in two parts, 2210 and 32243, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 221032243 in words is "two hundred twenty-one million, thirty-two thousand, two hundred forty-three".