111200133121 has 32 divisors (see below), whose sum is σ = 145850803200. Its totient is φ = 82243452480.

The previous prime is 111200133119. The next prime is 111200133199. The reversal of 111200133121 is 121331002111.

It is a happy number.

It is not a de Polignac number, because 111200133121 - 2¹ = 111200133119 is a prime.

It is a super-2 number, since 2×111200133121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111200133095 and 111200133104.

It is not an unprimeable number, because it can be changed into a prime (111200133721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290275 + ... + 553768.

It is an arithmetic number, because the mean of its divisors is an integer number (4557837600).

Almost surely, 2^111200133121 is an apocalyptic number.

111200133121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111200133121 is a deficient number, since it is larger than the sum of its proper divisors (34650670079).

111200133121 is a wasteful number, since it uses less digits than its factorization.

111200133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844149.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111200133121 its reverse (121331002111), we get a palindrome (232531135232).

The spelling of 111200133121 in words is "one hundred eleven billion, two hundred million, one hundred thirty-three thousand, one hundred twenty-one".