221302041 has 4 divisors (see below), whose sum is σ = 295069392. Its totient is φ = 147534692.

The previous prime is 221302033. The next prime is 221302049. The reversal of 221302041 is 140203122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (221302033) and next prime (221302049).

It is a cyclic number.

It is not a de Polignac number, because 221302041 - 2³ = 221302033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221302041.

It is not an unprimeable number, because it can be changed into a prime (221302049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36883671 + ... + 36883676.

It is an arithmetic number, because the mean of its divisors is an integer number (73767348).

Almost surely, 2^221302041 is an apocalyptic number.

It is an amenable number.

221302041 is a deficient number, since it is larger than the sum of its proper divisors (73767351).

221302041 is an equidigital number, since it uses as much as digits as its factorization.

221302041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73767350.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221302041 is about 14876.2240168666. The cubic root of 221302041 is about 604.8696675287.

Adding to 221302041 its reverse (140203122), we get a palindrome (361505163).

The spelling of 221302041 in words is "two hundred twenty-one million, three hundred two thousand, forty-one".