221434343241 has 4 divisors (see below), whose sum is σ = 295245790992. Its totient is φ = 147622895492.

The previous prime is 221434343213. The next prime is 221434343303. The reversal of 221434343241 is 142343434122.

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 221434343241 - 2⁵ = 221434343209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221434343041) 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, 36905723871 + ... + 36905723876.

It is an arithmetic number, because the mean of its divisors is an integer number (73811447748).

Almost surely, 2^221434343241 is an apocalyptic number.

It is an amenable number.

221434343241 is a deficient number, since it is larger than the sum of its proper divisors (73811447751).

221434343241 is an equidigital number, since it uses as much as digits as its factorization.

221434343241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73811447750.

The product of its digits is 55296, while the sum is 33.

Adding to 221434343241 its reverse (142343434122), we get a palindrome (363777777363).

The spelling of 221434343241 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred forty-three thousand, two hundred forty-one".