111200100201 has 12 divisors (see below), whose sum is σ = 161645441412. Its totient is φ = 73661211936.

The previous prime is 111200100133. The next prime is 111200100203. The reversal of 111200100201 is 102001002111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39537345600 + 71662754601 = 198840^2 + 267699^2 .

It is not a de Polignac number, because 111200100201 - 2⁷ = 111200100073 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (111200100203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39347526 + ... + 39350351.

It is an arithmetic number, because the mean of its divisors is an integer number (13470453451).

Almost surely, 2^111200100201 is an apocalyptic number.

It is an amenable number.

111200100201 is a deficient number, since it is larger than the sum of its proper divisors (50445341211).

111200100201 is a wasteful number, since it uses less digits than its factorization.

111200100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78698040 (or 78698037 counting only the distinct ones).

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

Adding to 111200100201 its reverse (102001002111), we get a palindrome (213201102312).

The spelling of 111200100201 in words is "one hundred eleven billion, two hundred million, one hundred thousand, two hundred one".