1180821211 has 2 divisors, whose sum is σ = 1180821212. Its totient is φ = 1180821210.

The previous prime is 1180821167. The next prime is 1180821247. The reversal of 1180821211 is 1121280811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1180821211 - 2⁹ = 1180820699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1180821251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590410605 + 590410606.

It is an arithmetic number, because the mean of its divisors is an integer number (590410606).

Almost surely, 2^1180821211 is an apocalyptic number.

1180821211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1180821211 is an equidigital number, since it uses as much as digits as its factorization.

1180821211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 25.

The square root of 1180821211 is about 34363.0791839148. The cubic root of 1180821211 is about 1056.9668872750.

The spelling of 1180821211 in words is "one billion, one hundred eighty million, eight hundred twenty-one thousand, two hundred eleven".