11122222211321 has 16 divisors (see below), whose sum is σ = 12174350166720. Its totient is φ = 10098181984320.

The previous prime is 11122222211281. The next prime is 11122222211323. The reversal of 11122222211321 is 12311222222111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122222211321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122222211323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68976290 + ... + 69137348.

It is an arithmetic number, because the mean of its divisors is an integer number (760896885420).

Almost surely, 2^{11122222211321} is an apocalyptic number.

It is an amenable number.

11122222211321 is a deficient number, since it is larger than the sum of its proper divisors (1052127955399).

11122222211321 is a wasteful number, since it uses less digits than its factorization.

11122222211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248216.

The product of its digits is 384, while the sum is 23.

Adding to 11122222211321 its reverse (12311222222111), we get a palindrome (23433444433432).

The spelling of 11122222211321 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, three hundred twenty-one".