122443545344221 has 2 divisors, whose sum is σ = 122443545344222. Its totient is φ = 122443545344220.

The previous prime is 122443545344129. The next prime is 122443545344227.

122443545344221 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99422635788100 + 23020909556121 = 9971090^2 + 4798011^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 122443545344221 - 2⁹ = 122443545343709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122443545344227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61221772672110 + 61221772672111.

It is an arithmetic number, because the mean of its divisors is an integer number (61221772672111).

Almost surely, 2^{122443545344221} is an apocalyptic number.

It is an amenable number.

122443545344221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122443545344221 is an equidigital number, since it uses as much as digits as its factorization.

122443545344221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3686400, while the sum is 46.

The spelling of 122443545344221 in words is "one hundred twenty-two trillion, four hundred forty-three billion, five hundred forty-five million, three hundred forty-four thousand, two hundred twenty-one".