201112681 has 16 divisors (see below), whose sum is σ = 251716608. Its totient is φ = 156099600.

The previous prime is 201112679. The next prime is 201112699. The reversal of 201112681 is 186211102.

It is a cyclic number.

It is not a de Polignac number, because 201112681 - 2¹ = 201112679 is a prime.

It is a super-2 number, since 2×201112681² = 80892620918015522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201112631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15286 + ... + 25216.

It is an arithmetic number, because the mean of its divisors is an integer number (15732288).

Almost surely, 2^201112681 is an apocalyptic number.

It is an amenable number.

201112681 is a deficient number, since it is larger than the sum of its proper divisors (50603927).

201112681 is a wasteful number, since it uses less digits than its factorization.

201112681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 201112681 is about 14181.4202744295. The cubic root of 201112681 is about 585.8860423257.

Adding to 201112681 its reverse (186211102), we get a palindrome (387323783).

The spelling of 201112681 in words is "two hundred one million, one hundred twelve thousand, six hundred eighty-one".