1115221741 has 2 divisors, whose sum is σ = 1115221742. Its totient is φ = 1115221740.

The previous prime is 1115221693. The next prime is 1115221753. The reversal of 1115221741 is 1471225111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 885062500 + 230159241 = 29750^2 + 15171^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115221741 - 2⁹ = 1115221229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115221141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557610870 + 557610871.

It is an arithmetic number, because the mean of its divisors is an integer number (557610871).

Almost surely, 2^1115221741 is an apocalyptic number.

It is an amenable number.

1115221741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115221741 is an equidigital number, since it uses as much as digits as its factorization.

1115221741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560, while the sum is 25.

The square root of 1115221741 is about 33394.9358585999. The cubic root of 1115221741 is about 1037.0198650486.

Adding to 1115221741 its reverse (1471225111), we get a palindrome (2586446852).

The spelling of 1115221741 in words is "one billion, one hundred fifteen million, two hundred twenty-one thousand, seven hundred forty-one".