11232110821 has 2 divisors, whose sum is σ = 11232110822. Its totient is φ = 11232110820.

The previous prime is 11232110809. The next prime is 11232110863. The reversal of 11232110821 is 12801123211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10374441025 + 857669796 = 101855^2 + 29286^2 .

It is a cyclic number.

It is not a de Polignac number, because 11232110821 - 2²⁵ = 11198556389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11232110792 and 11232110801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11232110801) 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, 5616055410 + 5616055411.

It is an arithmetic number, because the mean of its divisors is an integer number (5616055411).

Almost surely, 2^11232110821 is an apocalyptic number.

It is an amenable number.

11232110821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11232110821 is an equidigital number, since it uses as much as digits as its factorization.

11232110821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

The spelling of 11232110821 in words is "eleven billion, two hundred thirty-two million, one hundred ten thousand, eight hundred twenty-one".