1111221233211 has 16 divisors (see below), whose sum is σ = 1574143783200. Its totient is φ = 695937247488.

The previous prime is 1111221233183. The next prime is 1111221233231. The reversal of 1111221233211 is 1123321221111.

It is not a de Polignac number, because 1111221233211 - 2¹¹ = 1111221231163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111221233231) 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, 172600266 + ... + 172606703.

It is an arithmetic number, because the mean of its divisors is an integer number (98383986450).

Almost surely, 2^{1111221233211} is an apocalyptic number.

1111221233211 is a deficient number, since it is larger than the sum of its proper divisors (462922549989).

1111221233211 is a wasteful number, since it uses less digits than its factorization.

1111221233211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345207038.

The product of its digits is 144, while the sum is 21.

Adding to 1111221233211 its reverse (1123321221111), we get a palindrome (2234542454322).

The spelling of 1111221233211 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, two hundred thirty-three thousand, two hundred eleven".