221311212341 has 16 divisors (see below), whose sum is σ = 226893748224. Its totient is φ = 215797572144.

The previous prime is 221311212313. The next prime is 221311212347. The reversal of 221311212341 is 143212113122.

It is a cyclic number.

It is not a de Polignac number, because 221311212341 - 2¹⁸ = 221310950197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221311212347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20028080 + ... + 20039126.

It is an arithmetic number, because the mean of its divisors is an integer number (14180859264).

Almost surely, 2^221311212341 is an apocalyptic number.

It is an amenable number.

221311212341 is a deficient number, since it is larger than the sum of its proper divisors (5582535883).

221311212341 is a wasteful number, since it uses less digits than its factorization.

221311212341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14120.

The product of its digits is 576, while the sum is 23.

Adding to 221311212341 its reverse (143212113122), we get a palindrome (364523325463).

The spelling of 221311212341 in words is "two hundred twenty-one billion, three hundred eleven million, two hundred twelve thousand, three hundred forty-one".