221331221341 has 2 divisors, whose sum is σ = 221331221342. Its totient is φ = 221331221340.

The previous prime is 221331221323. The next prime is 221331221399. The reversal of 221331221341 is 143122133122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146777103225 + 74554118116 = 383115^2 + 273046^2 .

It is a cyclic number.

It is not a de Polignac number, because 221331221341 - 2⁷ = 221331221213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221331221641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110665610670 + 110665610671.

It is an arithmetic number, because the mean of its divisors is an integer number (110665610671).

Almost surely, 2^221331221341 is an apocalyptic number.

It is an amenable number.

221331221341 is a deficient number, since it is larger than the sum of its proper divisors (1).

221331221341 is an equidigital number, since it uses as much as digits as its factorization.

221331221341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

Adding to 221331221341 its reverse (143122133122), we get a palindrome (364453354463).

The spelling of 221331221341 in words is "two hundred twenty-one billion, three hundred thirty-one million, two hundred twenty-one thousand, three hundred forty-one".