11332213112221 has 4 divisors (see below), whose sum is σ = 11336956611100. Its totient is φ = 11327469613344.

The previous prime is 11332213112191. The next prime is 11332213112251. The reversal of 11332213112221 is 12221131223311.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11332213112191) and next prime (11332213112251).

It can be written as a sum of positive squares in 2 ways, for example, as 6241932604996 + 5090280507225 = 2498386^2 + 2256165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11332213112221 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 (11332213112251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371745856 + ... + 2371750633.

It is an arithmetic number, because the mean of its divisors is an integer number (2834239152775).

Almost surely, 2^{11332213112221} is an apocalyptic number.

It is an amenable number.

11332213112221 is a deficient number, since it is larger than the sum of its proper divisors (4743498879).

11332213112221 is an equidigital number, since it uses as much as digits as its factorization.

11332213112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743498878.

The product of its digits is 864, while the sum is 25.

Adding to 11332213112221 its reverse (12221131223311), we get a palindrome (23553344335532).

The spelling of 11332213112221 in words is "eleven trillion, three hundred thirty-two billion, two hundred thirteen million, one hundred twelve thousand, two hundred twenty-one".