111122122211011 has 4 divisors (see below), whose sum is σ = 111535215602400. Its totient is φ = 110709028819624.

The previous prime is 111122122210991. The next prime is 111122122211021. The reversal of 111122122211011 is 110112221221111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111122122211011 - 2³⁹ = 110572366397123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111122122211011.

It is not an unprimeable number, because it can be changed into a prime (111122122211021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206546695291 + ... + 206546695828.

It is an arithmetic number, because the mean of its divisors is an integer number (27883803900600).

Almost surely, 2^{111122122211011} is an apocalyptic number.

111122122211011 is a deficient number, since it is larger than the sum of its proper divisors (413093391389).

111122122211011 is an equidigital number, since it uses as much as digits as its factorization.

111122122211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413093391388.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111122122211011 its reverse (110112221221111), we get a palindrome (221234343432122).

The spelling of 111122122211011 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, eleven".