11233334521 has 2 divisors, whose sum is σ = 11233334522. Its totient is φ = 11233334520.

The previous prime is 11233334513. The next prime is 11233334587. The reversal of 11233334521 is 12543333211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11227521600 + 5812921 = 105960^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 11233334521 - 2³ = 11233334513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11233334521.

It is not a weakly prime, because it can be changed into another prime (11233334501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5616667260 + 5616667261.

It is an arithmetic number, because the mean of its divisors is an integer number (5616667261).

Almost surely, 2^11233334521 is an apocalyptic number.

It is an amenable number.

11233334521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11233334521 is an equidigital number, since it uses as much as digits as its factorization.

11233334521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 28.

Adding to 11233334521 its reverse (12543333211), we get a palindrome (23776667732).

The spelling of 11233334521 in words is "eleven billion, two hundred thirty-three million, three hundred thirty-four thousand, five hundred twenty-one".