11122112321 has 4 divisors (see below), whose sum is σ = 11125478832. Its totient is φ = 11118745812.

The previous prime is 11122112297. The next prime is 11122112333. The reversal of 11122112321 is 12321122111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11122112321 - 2⁶ = 11122112257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11122112321.

It is not an unprimeable number, because it can be changed into a prime (11122112621) 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, 1678295 + ... + 1684908.

It is an arithmetic number, because the mean of its divisors is an integer number (2781369708).

Almost surely, 2^11122112321 is an apocalyptic number.

It is an amenable number.

11122112321 is a deficient number, since it is larger than the sum of its proper divisors (3366511).

11122112321 is an equidigital number, since it uses as much as digits as its factorization.

11122112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366510.

The product of its digits is 48, while the sum is 17.

Adding to 11122112321 its reverse (12321122111), we get a palindrome (23443234432).

The spelling of 11122112321 in words is "eleven billion, one hundred twenty-two million, one hundred twelve thousand, three hundred twenty-one".