11222111311 has 4 divisors (see below), whose sum is σ = 11331063952. Its totient is φ = 11113158672.

The previous prime is 11222111291. The next prime is 11222111323. The reversal of 11222111311 is 11311122211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11311122211 = 4603 ⋅2457337.

It is a cyclic number.

It is not a de Polignac number, because 11222111311 - 2⁷ = 11222111183 is a prime.

It is a super-3 number, since 3×11222111311³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222111711) 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, 54476166 + ... + 54476371.

It is an arithmetic number, because the mean of its divisors is an integer number (2832765988).

Almost surely, 2^11222111311 is an apocalyptic number.

11222111311 is a deficient number, since it is larger than the sum of its proper divisors (108952641).

11222111311 is a wasteful number, since it uses less digits than its factorization.

11222111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108952640.

The product of its digits is 24, while the sum is 16.

Adding to 11222111311 its reverse (11311122211), we get a palindrome (22533233522).

The spelling of 11222111311 in words is "eleven billion, two hundred twenty-two million, one hundred eleven thousand, three hundred eleven".