1143224161 has 2 divisors, whose sum is σ = 1143224162. Its totient is φ = 1143224160.

The previous prime is 1143224077. The next prime is 1143224207. The reversal of 1143224161 is 1614223411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1123590400 + 19633761 = 33520^2 + 4431^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143224161 - 2¹⁷ = 1143093089 is a prime.

It is a super-2 number, since 2×1143224161² = 2613922964588307842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1143224861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571612080 + 571612081.

It is an arithmetic number, because the mean of its divisors is an integer number (571612081).

Almost surely, 2^1143224161 is an apocalyptic number.

It is an amenable number.

1143224161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143224161 is an equidigital number, since it uses as much as digits as its factorization.

1143224161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

The square root of 1143224161 is about 33811.5980249381. The cubic root of 1143224161 is about 1045.6278244698.

Adding to 1143224161 its reverse (1614223411), we get a palindrome (2757447572).

The spelling of 1143224161 in words is "one billion, one hundred forty-three million, two hundred twenty-four thousand, one hundred sixty-one".