13233053221 has 2 divisors, whose sum is σ = 13233053222. Its totient is φ = 13233053220.

The previous prime is 13233053209. The next prime is 13233053227. The reversal of 13233053221 is 12235033231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11381902596 + 1851150625 = 106686^2 + 43025^2 .

It is a cyclic number.

It is not a de Polignac number, because 13233053221 - 2²³ = 13224664613 is a prime.

It is a super-2 number, since 2×13233053221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13233053227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6616526610 + 6616526611.

It is an arithmetic number, because the mean of its divisors is an integer number (6616526611).

Almost surely, 2^13233053221 is an apocalyptic number.

It is an amenable number.

13233053221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13233053221 is an equidigital number, since it uses as much as digits as its factorization.

13233053221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 13233053221 its reverse (12235033231), we get a palindrome (25468086452).

The spelling of 13233053221 in words is "thirteen billion, two hundred thirty-three million, fifty-three thousand, two hundred twenty-one".