11013221121 has 8 divisors (see below), whose sum is σ = 16782051264. Its totient is φ = 6293269200.

The previous prime is 11013221111. The next prime is 11013221147. The reversal of 11013221121 is 12112231011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11013221121 - 2⁶ = 11013221057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11013221121.

It is not an unprimeable number, because it can be changed into a prime (11013221101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262219530 + ... + 262219571.

It is an arithmetic number, because the mean of its divisors is an integer number (2097756408).

Almost surely, 2^11013221121 is an apocalyptic number.

It is an amenable number.

11013221121 is a deficient number, since it is larger than the sum of its proper divisors (5768830143).

11013221121 is an equidigital number, since it uses as much as digits as its factorization.

11013221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524439111.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11013221121 its reverse (12112231011), we get a palindrome (23125452132).

The spelling of 11013221121 in words is "eleven billion, thirteen million, two hundred twenty-one thousand, one hundred twenty-one".