201112155 has 24 divisors (see below), whose sum is σ = 349940448. Its totient is φ = 106845696.

The previous prime is 201112111. The next prime is 201112189. The reversal of 201112155 is 551211102.

It is not a de Polignac number, because 201112155 - 2⁸ = 201111899 is a prime.

It is a super-3 number, since 3×201112155³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3339 + ... + 20331.

It is an arithmetic number, because the mean of its divisors is an integer number (14580852).

Almost surely, 2^201112155 is an apocalyptic number.

201112155 is a deficient number, since it is larger than the sum of its proper divisors (148828293).

201112155 is a wasteful number, since it uses less digits than its factorization.

201112155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17267 (or 17264 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 201112155 is about 14181.4017290252. The cubic root of 201112155 is about 585.8855315402.

Adding to 201112155 its reverse (551211102), we get a palindrome (752323257).

The spelling of 201112155 in words is "two hundred one million, one hundred twelve thousand, one hundred fifty-five".