221010441 has 8 divisors (see below), whose sum is σ = 296384640. Its totient is φ = 146488272.

The previous prime is 221010431. The next prime is 221010463. The reversal of 221010441 is 144010122.

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

It is not a de Polignac number, because 221010441 - 2²³ = 212621833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221010441.

It is not an unprimeable number, because it can be changed into a prime (221010431) 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, 212401 + ... + 213438.

It is an arithmetic number, because the mean of its divisors is an integer number (37048080).

Almost surely, 2^221010441 is an apocalyptic number.

It is an amenable number.

221010441 is a deficient number, since it is larger than the sum of its proper divisors (75374199).

221010441 is a wasteful number, since it uses less digits than its factorization.

221010441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426015.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 221010441 is about 14866.4199120030. The cubic root of 221010441 is about 604.6038806726.

Adding to 221010441 its reverse (144010122), we get a palindrome (365020563).

The spelling of 221010441 in words is "two hundred twenty-one million, ten thousand, four hundred forty-one".