221433101 has 8 divisors (see below), whose sum is σ = 226917504. Its totient is φ = 215964000.

The previous prime is 221433089. The next prime is 221433103. The reversal of 221433101 is 101334122.

221433101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221433101 - 2²⁶ = 154324237 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 221433101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221433103) 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, 28865 + ... + 35721.

It is an arithmetic number, because the mean of its divisors is an integer number (28364688).

Almost surely, 2^221433101 is an apocalyptic number.

It is an amenable number.

221433101 is a deficient number, since it is larger than the sum of its proper divisors (5484403).

221433101 is an equidigital number, since it uses as much as digits as its factorization.

221433101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7651.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 221433101 is about 14880.6283805490. The cubic root of 221433101 is about 604.9890497301.

Adding to 221433101 its reverse (101334122), we get a palindrome (322767223).

The spelling of 221433101 in words is "two hundred twenty-one million, four hundred thirty-three thousand, one hundred one".