111312222102 has 24 divisors (see below), whose sum is σ = 248956368960. Its totient is φ = 35907168240.

The previous prime is 111312222101. The next prime is 111312222121. The reversal of 111312222102 is 201222213111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312222101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99741577 + ... + 99742692.

It is an arithmetic number, because the mean of its divisors is an integer number (10373182040).

Almost surely, 2^111312222102 is an apocalyptic number.

111312222102 is an abundant number, since it is smaller than the sum of its proper divisors (137644146858).

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

111312222102 is a wasteful number, since it uses less digits than its factorization.

111312222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199484308 (or 199484305 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111312222102 its reverse (201222213111), we get a palindrome (312534435213).

It can be divided in two parts, 111 and 312222102, that added together give a palindrome (312222213).

The spelling of 111312222102 in words is "one hundred eleven billion, three hundred twelve million, two hundred twenty-two thousand, one hundred two".