1177041221 has 2 divisors, whose sum is σ = 1177041222. Its totient is φ = 1177041220.

The previous prime is 1177041199. The next prime is 1177041227. The reversal of 1177041221 is 1221407711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 859310596 + 317730625 = 29314^2 + 17825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1177041221 - 2³⁰ = 103299397 is a prime.

It is a zygodrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1177041227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 588520610 + 588520611.

It is an arithmetic number, because the mean of its divisors is an integer number (588520611).

Almost surely, 2^1177041221 is an apocalyptic number.

It is an amenable number.

1177041221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1177041221 is an equidigital number, since it uses as much as digits as its factorization.

1177041221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 1177041221 is about 34308.0343505716. The cubic root of 1177041221 is about 1055.8378439051.

Adding to 1177041221 its reverse (1221407711), we get a palindrome (2398448932).

The spelling of 1177041221 in words is "one billion, one hundred seventy-seven million, forty-one thousand, two hundred twenty-one".