11201121223 has 4 divisors (see below), whose sum is σ = 11225419128. Its totient is φ = 11176823320.

The previous prime is 11201121203. The next prime is 11201121251. The reversal of 11201121223 is 32212110211.

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 11201121223 - 2¹³ = 11201113031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201121197 and 11201121206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201121203) 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, 12148261 + ... + 12149182.

It is an arithmetic number, because the mean of its divisors is an integer number (2806354782).

Almost surely, 2^11201121223 is an apocalyptic number.

11201121223 is a deficient number, since it is larger than the sum of its proper divisors (24297905).

11201121223 is an equidigital number, since it uses as much as digits as its factorization.

11201121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24297904.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11201121223 its reverse (32212110211), we get a palindrome (43413231434).

The spelling of 11201121223 in words is "eleven billion, two hundred one million, one hundred twenty-one thousand, two hundred twenty-three".