221231341 has 2 divisors, whose sum is σ = 221231342. Its totient is φ = 221231340.

The previous prime is 221231327. The next prime is 221231347. The reversal of 221231341 is 143132122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137124100 + 84107241 = 11710^2 + 9171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221231341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221231347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110615670 + 110615671.

It is an arithmetic number, because the mean of its divisors is an integer number (110615671).

Almost surely, 2^221231341 is an apocalyptic number.

It is an amenable number.

221231341 is a deficient number, since it is larger than the sum of its proper divisors (1).

221231341 is an equidigital number, since it uses as much as digits as its factorization.

221231341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 221231341 is about 14873.8475519954. The cubic root of 221231341 is about 604.8052475169.

Adding to 221231341 its reverse (143132122), we get a palindrome (364363463).

The spelling of 221231341 in words is "two hundred twenty-one million, two hundred thirty-one thousand, three hundred forty-one".