1161211 has 4 divisors (see below), whose sum is σ = 1177192. Its totient is φ = 1145232.

The previous prime is 1161203. The next prime is 1161217. The reversal of 1161211 is 1121611.

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

It is a cyclic number.

It is not a de Polignac number, because 1161211 - 2³ = 1161203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161191 and 1161200.

It is not an unprimeable number, because it can be changed into a prime (1161217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7881 + ... + 8026.

It is an arithmetic number, because the mean of its divisors is an integer number (294298).

2^1161211 is an apocalyptic number.

1161211 is a deficient number, since it is larger than the sum of its proper divisors (15981).

1161211 is an equidigital number, since it uses as much as digits as its factorization.

1161211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15980.

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

The square root of 1161211 is about 1077.5950074123. The cubic root of 1161211 is about 105.1083084973.

Adding to 1161211 its reverse (1121611), we get a palindrome (2282822).

The spelling of 1161211 in words is "one million, one hundred sixty-one thousand, two hundred eleven".