221306224141 has 4 divisors (see below), whose sum is σ = 221474008800. Its totient is φ = 221138439484.

The previous prime is 221306224129. The next prime is 221306224169. The reversal of 221306224141 is 141422603122.

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 221306224141 - 2²⁹ = 220769353229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221306224441) 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, 83890351 + ... + 83892988.

It is an arithmetic number, because the mean of its divisors is an integer number (55368502200).

Almost surely, 2^221306224141 is an apocalyptic number.

It is an amenable number.

221306224141 is a deficient number, since it is larger than the sum of its proper divisors (167784659).

221306224141 is a wasteful number, since it uses less digits than its factorization.

221306224141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167784658.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 221306224141 its reverse (141422603122), we get a palindrome (362728827263).

The spelling of 221306224141 in words is "two hundred twenty-one billion, three hundred six million, two hundred twenty-four thousand, one hundred forty-one".