221202011441 has 2 divisors, whose sum is σ = 221202011442. Its totient is φ = 221202011440.

The previous prime is 221202011423. The next prime is 221202011449. The reversal of 221202011441 is 144110202122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126519644416 + 94682367025 = 355696^2 + 307705^2 .

It is a cyclic number.

It is not a de Polignac number, because 221202011441 - 2¹⁰ = 221202010417 is a prime.

It is not a weakly prime, because it can be changed into another prime (221202011449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110601005720 + 110601005721.

It is an arithmetic number, because the mean of its divisors is an integer number (110601005721).

Almost surely, 2^221202011441 is an apocalyptic number.

It is an amenable number.

221202011441 is a deficient number, since it is larger than the sum of its proper divisors (1).

221202011441 is an equidigital number, since it uses as much as digits as its factorization.

221202011441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221202011441 its reverse (144110202122), we get a palindrome (365312213563).

The spelling of 221202011441 in words is "two hundred twenty-one billion, two hundred two million, eleven thousand, four hundred forty-one".