221110341321 has 4 divisors (see below), whose sum is σ = 294813788432. Its totient is φ = 147406894212.

The previous prime is 221110341317. The next prime is 221110341343. The reversal of 221110341321 is 123143011122.

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 not a de Polignac number, because 221110341321 - 2² = 221110341317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221110341521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36851723551 + ... + 36851723556.

It is an arithmetic number, because the mean of its divisors is an integer number (73703447108).

Almost surely, 2^221110341321 is an apocalyptic number.

It is an amenable number.

221110341321 is a deficient number, since it is larger than the sum of its proper divisors (73703447111).

221110341321 is an equidigital number, since it uses as much as digits as its factorization.

221110341321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73703447110.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221110341321 its reverse (123143011122), we get a palindrome (344253352443).

The spelling of 221110341321 in words is "two hundred twenty-one billion, one hundred ten million, three hundred forty-one thousand, three hundred twenty-one".