111311010012 has 24 divisors (see below), whose sum is σ = 266745304336. Its totient is φ = 36100867968.

The previous prime is 111311010011. The next prime is 111311010023. The reversal of 111311010012 is 210010113111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 111311010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311010011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125349793 + ... + 125350680.

Almost surely, 2^111311010012 is an apocalyptic number.

111311010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111311010012 is an abundant number, since it is smaller than the sum of its proper divisors (155434294324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111311010012 is a wasteful number, since it uses less digits than its factorization.

111311010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250700517 (or 250700515 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 111311010012 its reverse (210010113111), we get a palindrome (321321123123).

The spelling of 111311010012 in words is "one hundred eleven billion, three hundred eleven million, ten thousand, twelve".