13111111112211 has 24 divisors (see below), whose sum is σ = 21645697598304. Its totient is φ = 7491385509120.

The previous prime is 13111111112179. The next prime is 13111111112249. The reversal of 13111111112211 is 11221111111131.

It is a happy number.

It is not a de Polignac number, because 13111111112211 - 2⁵ = 13111111112179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13111111112251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8714320 + ... + 10107501.

It is an arithmetic number, because the mean of its divisors is an integer number (901904066596).

Almost surely, 2^{13111111112211} is an apocalyptic number.

13111111112211 is a deficient number, since it is larger than the sum of its proper divisors (8534586486093).

13111111112211 is a wasteful number, since it uses less digits than its factorization.

13111111112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18832891 (or 18832888 counting only the distinct ones).

The product of its digits is 12, while the sum is 18.

Adding to 13111111112211 its reverse (11221111111131), we get a palindrome (24332222223342).

The spelling of 13111111112211 in words is "thirteen trillion, one hundred eleven billion, one hundred eleven million, one hundred twelve thousand, two hundred eleven".