111200101728 has 48 divisors (see below), whose sum is σ = 291924921456. Its totient is φ = 37063569920.

The previous prime is 111200101703. The next prime is 111200101729. The reversal of 111200101728 is 827101002111.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 111200101698 and 111200101707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200101729) 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, 1280950 + ... + 1365002.

It is an arithmetic number, because the mean of its divisors is an integer number (6081769197).

Almost surely, 2^111200101728 is an apocalyptic number.

It is an amenable number.

111200101728 is an abundant number, since it is smaller than the sum of its proper divisors (180724819728).

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

111200101728 is a wasteful number, since it uses less digits than its factorization.

111200101728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97847 (or 97839 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 24.

Adding to 111200101728 its reverse (827101002111), we get a palindrome (938301103839).

The spelling of 111200101728 in words is "one hundred eleven billion, two hundred million, one hundred one thousand, seven hundred twenty-eight".