11210322231221 has 4 divisors (see below), whose sum is σ = 11213421577452. Its totient is φ = 11207222884992.

The previous prime is 11210322231197. The next prime is 11210322231233. The reversal of 11210322231221 is 12213222301211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2940844282321 + 8269477948900 = 1714889^2 + 2875670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11210322231221 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 (11210322231271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1549667690 + ... + 1549674923.

It is an arithmetic number, because the mean of its divisors is an integer number (2803355394363).

Almost surely, 2^{11210322231221} is an apocalyptic number.

It is an amenable number.

11210322231221 is a deficient number, since it is larger than the sum of its proper divisors (3099346231).

11210322231221 is an equidigital number, since it uses as much as digits as its factorization.

11210322231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099346230.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 11210322231221 its reverse (12213222301211), we get a palindrome (23423544532432).

The spelling of 11210322231221 in words is "eleven trillion, two hundred ten billion, three hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty-one".