221334221441 has 4 divisors (see below), whose sum is σ = 221344104192. Its totient is φ = 221324338692.

The previous prime is 221334221401. The next prime is 221334221467. The reversal of 221334221441 is 144122433122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 144122433122 = 2 ⋅72061216561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221334221441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221334221401) 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, 4907705 + ... + 4952598.

It is an arithmetic number, because the mean of its divisors is an integer number (55336026048).

Almost surely, 2^221334221441 is an apocalyptic number.

It is an amenable number.

221334221441 is a deficient number, since it is larger than the sum of its proper divisors (9882751).

221334221441 is an equidigital number, since it uses as much as digits as its factorization.

221334221441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9882750.

The product of its digits is 9216, while the sum is 29.

Adding to 221334221441 its reverse (144122433122), we get a palindrome (365456654563).

The spelling of 221334221441 in words is "two hundred twenty-one billion, three hundred thirty-four million, two hundred twenty-one thousand, four hundred forty-one".