4012111 has 2 divisors, whose sum is σ = 4012112. Its totient is φ = 4012110.

The previous prime is 4012109. The next prime is 4012133. The reversal of 4012111 is 1112104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4012111 - 2¹ = 4012109 is a prime.

Together with 4012109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4012171) 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 as a sum of consecutive naturals, namely, 2006055 + 2006056.

It is an arithmetic number, because the mean of its divisors is an integer number (2006056).

Almost surely, 2^4012111 is an apocalyptic number.

4012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

4012111 is an equidigital number, since it uses as much as digits as its factorization.

4012111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 4012111 is about 2003.0254616455. The cubic root of 4012111 is about 158.9001522290.

Adding to 4012111 its reverse (1112104), we get a palindrome (5124215).

The spelling of 4012111 in words is "four million, twelve thousand, one hundred eleven".