111234512312 has 192 divisors, whose sum is σ = 280087165440. Its totient is φ = 40867411200.

The previous prime is 111234512287. The next prime is 111234512329. The reversal of 111234512312 is 213215432111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7033598 + ... + 7049394.

It is an arithmetic number, because the mean of its divisors is an integer number (1458787320).

Almost surely, 2^111234512312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111234512312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140043582720).

111234512312 is an abundant number, since it is smaller than the sum of its proper divisors (168852653128).

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

111234512312 is a wasteful number, since it uses less digits than its factorization.

111234512312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15922 (or 15911 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

Adding to 111234512312 its reverse (213215432111), we get a palindrome (324449944423).

The spelling of 111234512312 in words is "one hundred eleven billion, two hundred thirty-four million, five hundred twelve thousand, three hundred twelve".