11331123102221 has 16 divisors (see below), whose sum is σ = 12336227769600. Its totient is φ = 10345646455488.

The previous prime is 11331123102203. The next prime is 11331123102253. The reversal of 11331123102221 is 12220132113311.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11331123102221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331123102281) 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 in 15 ways as a sum of consecutive naturals, for example, 11169461 + ... + 12141626.

It is an arithmetic number, because the mean of its divisors is an integer number (771014235600).

Almost surely, 2^{11331123102221} is an apocalyptic number.

It is an amenable number.

11331123102221 is a deficient number, since it is larger than the sum of its proper divisors (1005104667379).

11331123102221 is a wasteful number, since it uses less digits than its factorization.

11331123102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23311508.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11331123102221 its reverse (12220132113311), we get a palindrome (23551255215532).

The spelling of 11331123102221 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-three million, one hundred two thousand, two hundred twenty-one".