1206111 has 4 divisors (see below), whose sum is σ = 1608152. Its totient is φ = 804072.

The previous prime is 1206071. The next prime is 1206113. The reversal of 1206111 is 1116021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1206111 - 2¹⁵ = 1173343 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206113) 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 3 ways as a sum of consecutive naturals, for example, 201016 + ... + 201021.

It is an arithmetic number, because the mean of its divisors is an integer number (402038).

2^1206111 is an apocalyptic number.

1206111 is a deficient number, since it is larger than the sum of its proper divisors (402041).

1206111 is an equidigital number, since it uses as much as digits as its factorization.

1206111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402040.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1206111 is about 1098.2308500493. The cubic root of 1206111 is about 106.4459378680.

The spelling of 1206111 in words is "one million, two hundred six thousand, one hundred eleven".