11133023221 has 2 divisors, whose sum is σ = 11133023222. Its totient is φ = 11133023220.

The previous prime is 11133023219. The next prime is 11133023227. The reversal of 11133023221 is 12232033111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7474467025 + 3658556196 = 86455^2 + 60486^2 .

It is a cyclic number.

It is not a de Polignac number, because 11133023221 - 2¹ = 11133023219 is a prime.

Together with 11133023219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11133023227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5566511610 + 5566511611.

It is an arithmetic number, because the mean of its divisors is an integer number (5566511611).

Almost surely, 2^11133023221 is an apocalyptic number.

It is an amenable number.

11133023221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11133023221 is an equidigital number, since it uses as much as digits as its factorization.

11133023221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11133023221 its reverse (12232033111), we get a palindrome (23365056332).

The spelling of 11133023221 in words is "eleven billion, one hundred thirty-three million, twenty-three thousand, two hundred twenty-one".