11131003422221 has 4 divisors (see below), whose sum is σ = 11140968511452. Its totient is φ = 11121038332992.

The previous prime is 11131003422211. The next prime is 11131003422223. The reversal of 11131003422221 is 12222430013111.

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 2881964593225 + 8249038828996 = 1697635^2 + 2872114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131003422221 is a prime.

It is a super-2 number, since 2×11131003422221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131003422223) 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 3 ways as a sum of consecutive naturals, for example, 4982542940 + ... + 4982545173.

It is an arithmetic number, because the mean of its divisors is an integer number (2785242127863).

Almost surely, 2^{11131003422221} is an apocalyptic number.

It is an amenable number.

11131003422221 is a deficient number, since it is larger than the sum of its proper divisors (9965089231).

11131003422221 is an equidigital number, since it uses as much as digits as its factorization.

11131003422221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9965089230.

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

Adding to 11131003422221 its reverse (12222430013111), we get a palindrome (23353433435332).

The spelling of 11131003422221 in words is "eleven trillion, one hundred thirty-one billion, three million, four hundred twenty-two thousand, two hundred twenty-one".