221310221102241 has 4 divisors (see below), whose sum is σ = 295080294802992. Its totient is φ = 147540147401492.

The previous prime is 221310221102239. The next prime is 221310221102263. The reversal of 221310221102241 is 142201122013122.

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 a cyclic number.

It is not a de Polignac number, because 221310221102241 - 2¹ = 221310221102239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221310221102281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36885036850371 + ... + 36885036850376.

It is an arithmetic number, because the mean of its divisors is an integer number (73770073700748).

Almost surely, 2^{221310221102241} is an apocalyptic number.

It is an amenable number.

221310221102241 is a deficient number, since it is larger than the sum of its proper divisors (73770073700751).

221310221102241 is an equidigital number, since it uses as much as digits as its factorization.

221310221102241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73770073700750.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 221310221102241 its reverse (142201122013122), we get a palindrome (363511343115363).

The spelling of 221310221102241 in words is "two hundred twenty-one trillion, three hundred ten billion, two hundred twenty-one million, one hundred two thousand, two hundred forty-one".