21334222241 has 2 divisors, whose sum is σ = 21334222242. Its totient is φ = 21334222240.

The previous prime is 21334222201. The next prime is 21334222271. The reversal of 21334222241 is 14222243312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18386275216 + 2947947025 = 135596^2 + 54295^2 .

It is a cyclic number.

It is not a de Polignac number, because 21334222241 - 2¹⁰ = 21334221217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21334222241.

It is not a weakly prime, because it can be changed into another prime (21334222201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10667111120 + 10667111121.

It is an arithmetic number, because the mean of its divisors is an integer number (10667111121).

Almost surely, 2^21334222241 is an apocalyptic number.

It is an amenable number.

21334222241 is a deficient number, since it is larger than the sum of its proper divisors (1).

21334222241 is an equidigital number, since it uses as much as digits as its factorization.

21334222241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 26.

Adding to 21334222241 its reverse (14222243312), we get a palindrome (35556465553).

The spelling of 21334222241 in words is "twenty-one billion, three hundred thirty-four million, two hundred twenty-two thousand, two hundred forty-one".