12111061 has 2 divisors, whose sum is σ = 12111062. Its totient is φ = 12111060.

The previous prime is 12111059. The next prime is 12111091. The reversal of 12111061 is 16011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9186961 + 2924100 = 3031^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111061 - 2¹ = 12111059 is a prime.

Together with 12111059, 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 (12111091) 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, 6055530 + 6055531.

It is an arithmetic number, because the mean of its divisors is an integer number (6055531).

Almost surely, 2^12111061 is an apocalyptic number.

It is an amenable number.

12111061 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111061 is an equidigital number, since it uses as much as digits as its factorization.

12111061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 12111061 is about 3480.0949699685. The cubic root of 12111061 is about 229.6469757528.

Adding to 12111061 its reverse (16011121), we get a palindrome (28122182).

The spelling of 12111061 in words is "twelve million, one hundred eleven thousand, sixty-one".