111234542100 has 144 divisors (see below), whose sum is σ = 354573930816. Its totient is φ = 26698880000.

The previous prime is 111234542093. The next prime is 111234542173. The reversal of 111234542100 is 1245432111.

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, 166432 + ... + 500168.

It is an arithmetic number, because the mean of its divisors is an integer number (2462318964).

Almost surely, 2^111234542100 is an apocalyptic number.

111234542100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111234542100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177286965408).

111234542100 is an abundant number, since it is smaller than the sum of its proper divisors (243339388716).

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

111234542100 is a wasteful number, since it uses less digits than its factorization.

111234542100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333866 (or 333859 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 111234542100 its reverse (1245432111), we get a palindrome (112479974211).

The spelling of 111234542100 in words is "one hundred eleven billion, two hundred thirty-four million, five hundred forty-two thousand, one hundred".