221401041 has 8 divisors (see below), whose sum is σ = 295320480. Its totient is φ = 147541152.

The previous prime is 221401009. The next prime is 221401049. The reversal of 221401041 is 140104122.

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

It is not a de Polignac number, because 221401041 - 2⁵ = 221401009 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221401041.

It is not an unprimeable number, because it can be changed into a prime (221401049) 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, 5335 + ... + 21708.

It is an arithmetic number, because the mean of its divisors is an integer number (36915060).

Almost surely, 2^221401041 is an apocalyptic number.

It is an amenable number.

221401041 is a deficient number, since it is larger than the sum of its proper divisors (73919439).

221401041 is a wasteful number, since it uses less digits than its factorization.

221401041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29775.

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

The square root of 221401041 is about 14879.5511020998. The cubic root of 221401041 is about 604.9598507154.

Adding to 221401041 its reverse (140104122), we get a palindrome (361505163).

The spelling of 221401041 in words is "two hundred twenty-one million, four hundred one thousand, forty-one".