1105221361 has 2 divisors, whose sum is σ = 1105221362. Its totient is φ = 1105221360.

The previous prime is 1105221353. The next prime is 1105221449. The reversal of 1105221361 is 1631225011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1104897600 + 323761 = 33240^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105221361 - 2³ = 1105221353 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105222361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552610680 + 552610681.

It is an arithmetic number, because the mean of its divisors is an integer number (552610681).

Almost surely, 2^1105221361 is an apocalyptic number.

It is an amenable number.

1105221361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105221361 is an equidigital number, since it uses as much as digits as its factorization.

1105221361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1105221361 is about 33244.8696944356. The cubic root of 1105221361 is about 1033.9108431770.

Adding to 1105221361 its reverse (1631225011), we get a palindrome (2736446372).

The spelling of 1105221361 in words is "one billion, one hundred five million, two hundred twenty-one thousand, three hundred sixty-one".