11221113031 has 4 divisors (see below), whose sum is σ = 11482069192. Its totient is φ = 10960156872.

The previous prime is 11221113011. The next prime is 11221113037. The reversal of 11221113031 is 13031112211.

It is a happy number.

11221113031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11221113031 - 2²¹ = 11219015879 is a prime.

It is a super-2 number, since 2×11221113031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221112996 and 11221113014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221113037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130478016 + ... + 130478101.

It is an arithmetic number, because the mean of its divisors is an integer number (2870517298).

Almost surely, 2^11221113031 is an apocalyptic number.

11221113031 is a deficient number, since it is larger than the sum of its proper divisors (260956161).

11221113031 is an equidigital number, since it uses as much as digits as its factorization.

11221113031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260956160.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11221113031 its reverse (13031112211), we get a palindrome (24252225242).

The spelling of 11221113031 in words is "eleven billion, two hundred twenty-one million, one hundred thirteen thousand, thirty-one".