221202113441 has 2 divisors, whose sum is σ = 221202113442. Its totient is φ = 221202113440.

The previous prime is 221202113387. The next prime is 221202113453. The reversal of 221202113441 is 144311202122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221201843041 + 270400 = 470321^2 + 520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221202113441 is a prime.

It is not a weakly prime, because it can be changed into another prime (221202113141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110601056720 + 110601056721.

It is an arithmetic number, because the mean of its divisors is an integer number (110601056721).

Almost surely, 2^221202113441 is an apocalyptic number.

It is an amenable number.

221202113441 is a deficient number, since it is larger than the sum of its proper divisors (1).

221202113441 is an equidigital number, since it uses as much as digits as its factorization.

221202113441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 221202113441 its reverse (144311202122), we get a palindrome (365513315563).

The spelling of 221202113441 in words is "two hundred twenty-one billion, two hundred two million, one hundred thirteen thousand, four hundred forty-one".