111231355411 has 4 divisors (see below), whose sum is σ = 121343296824. Its totient is φ = 101119414000.

The previous prime is 111231355399. The next prime is 111231355427. The reversal of 111231355411 is 114553132111.

It is a happy number.

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

It is not a de Polignac number, because 111231355411 - 2⁵ = 111231355379 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 111231355411.

It is not an unprimeable number, because it can be changed into a prime (111231355211) 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, 5055970690 + ... + 5055970711.

It is an arithmetic number, because the mean of its divisors is an integer number (30335824206).

Almost surely, 2^111231355411 is an apocalyptic number.

111231355411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111231355411 is a deficient number, since it is larger than the sum of its proper divisors (10111941413).

111231355411 is a wasteful number, since it uses less digits than its factorization.

111231355411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111941412.

The product of its digits is 1800, while the sum is 28.

Adding to 111231355411 its reverse (114553132111), we get a palindrome (225784487522).

The spelling of 111231355411 in words is "one hundred eleven billion, two hundred thirty-one million, three hundred fifty-five thousand, four hundred eleven".