1211087 has 2 divisors, whose sum is σ = 1211088. Its totient is φ = 1211086.

The previous prime is 1211083. The next prime is 1211141. The reversal of 1211087 is 7801121.

It is a weak prime.

It is an emirp because it is prime and its reverse (7801121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211087 - 2² = 1211083 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211081) 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, 605543 + 605544.

It is an arithmetic number, because the mean of its divisors is an integer number (605544).

2^1211087 is an apocalyptic number.

1211087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211087 is an equidigital number, since it uses as much as digits as its factorization.

1211087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 1211087 is about 1100.4939799926. The cubic root of 1211087 is about 106.5921234824.

The spelling of 1211087 in words is "one million, two hundred eleven thousand, eighty-seven".