1180821227 has 4 divisors (see below), whose sum is σ = 1181343000. Its totient is φ = 1180299456.

The previous prime is 1180821211. The next prime is 1180821247. The reversal of 1180821227 is 7221280811.

It is a happy number.

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 1180821227 - 2⁴ = 1180821211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1180821193 and 1180821202.

It is not an unprimeable number, because it can be changed into a prime (1180821247) 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 in 3 ways as a sum of consecutive naturals, for example, 257477 + ... + 262022.

It is an arithmetic number, because the mean of its divisors is an integer number (295335750).

Almost surely, 2^1180821227 is an apocalyptic number.

1180821227 is a deficient number, since it is larger than the sum of its proper divisors (521773).

1180821227 is an equidigital number, since it uses as much as digits as its factorization.

1180821227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521772.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 1180821227 is about 34363.0794167228. The cubic root of 1180821227 is about 1056.9668920489.

The spelling of 1180821227 in words is "one billion, one hundred eighty million, eight hundred twenty-one thousand, two hundred twenty-seven".