1170056221 has 2 divisors, whose sum is σ = 1170056222. Its totient is φ = 1170056220.

The previous prime is 1170056149. The next prime is 1170056231. The reversal of 1170056221 is 1226500711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 599515225 + 570540996 = 24485^2 + 23886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1170056221 - 2⁹ = 1170055709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1170056231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585028110 + 585028111.

It is an arithmetic number, because the mean of its divisors is an integer number (585028111).

Almost surely, 2^1170056221 is an apocalyptic number.

It is an amenable number.

1170056221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1170056221 is an equidigital number, since it uses as much as digits as its factorization.

1170056221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1170056221 is about 34206.0845610836. The cubic root of 1170056221 is about 1053.7451207238.

Adding to 1170056221 its reverse (1226500711), we get a palindrome (2396556932).

The spelling of 1170056221 in words is "one billion, one hundred seventy million, fifty-six thousand, two hundred twenty-one".