111200101020 has 48 divisors (see below), whose sum is σ = 345955871520. Its totient is φ = 29653360128.

The previous prime is 111200101007. The next prime is 111200101027. The reversal of 111200101020 is 20101002111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 111200100993 and 111200101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200101027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102962517 + ... + 102963596.

It is an arithmetic number, because the mean of its divisors is an integer number (7207413990).

Almost surely, 2^111200101020 is an apocalyptic number.

111200101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200101020 is an abundant number, since it is smaller than the sum of its proper divisors (234755770500).

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

111200101020 is a wasteful number, since it uses less digits than its factorization.

111200101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205926131 (or 205926123 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111200101020 its reverse (20101002111), we get a palindrome (131301103131).

The spelling of 111200101020 in words is "one hundred eleven billion, two hundred million, one hundred one thousand, twenty".