21223201133 has 2 divisors, whose sum is σ = 21223201134. Its totient is φ = 21223201132.

The previous prime is 21223201123. The next prime is 21223201141. The reversal of 21223201133 is 33110232212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18849367849 + 2373833284 = 137293^2 + 48722^2 .

It is a cyclic number.

It is not a de Polignac number, because 21223201133 - 2¹⁰ = 21223200109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223201123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611600566 + 10611600567.

It is an arithmetic number, because the mean of its divisors is an integer number (10611600567).

Almost surely, 2^21223201133 is an apocalyptic number.

It is an amenable number.

21223201133 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223201133 is an equidigital number, since it uses as much as digits as its factorization.

21223201133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21223201133 its reverse (33110232212), we get a palindrome (54333433345).

The spelling of 21223201133 in words is "twenty-one billion, two hundred twenty-three million, two hundred one thousand, one hundred thirty-three".