21133222241 has 2 divisors, whose sum is σ = 21133222242. Its totient is φ = 21133222240.

The previous prime is 21133222211. The next prime is 21133222249. The reversal of 21133222241 is 14222233112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16468332241 + 4664890000 = 128329^2 + 68300^2 .

It is a cyclic number.

It is not a de Polignac number, because 21133222241 - 2¹⁴ = 21133205857 is a prime.

It is a super-2 number, since 2×21133222241² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21133222249) 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, 10566611120 + 10566611121.

It is an arithmetic number, because the mean of its divisors is an integer number (10566611121).

Almost surely, 2^21133222241 is an apocalyptic number.

It is an amenable number.

21133222241 is a deficient number, since it is larger than the sum of its proper divisors (1).

21133222241 is an equidigital number, since it uses as much as digits as its factorization.

21133222241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

Adding to 21133222241 its reverse (14222233112), we get a palindrome (35355455353).

The spelling of 21133222241 in words is "twenty-one billion, one hundred thirty-three million, two hundred twenty-two thousand, two hundred forty-one".