1224443161 has 2 divisors, whose sum is σ = 1224443162. Its totient is φ = 1224443160.

The previous prime is 1224443119. The next prime is 1224443197. The reversal of 1224443161 is 1613444221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630010000 + 594433161 = 25100^2 + 24381^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224443161 - 2¹⁵ = 1224410393 is a prime.

It is a super-2 number, since 2×1224443161² = 2998522109039343842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1224443261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612221580 + 612221581.

It is an arithmetic number, because the mean of its divisors is an integer number (612221581).

Almost surely, 2^1224443161 is an apocalyptic number.

It is an amenable number.

1224443161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224443161 is an equidigital number, since it uses as much as digits as its factorization.

1224443161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 28.

The square root of 1224443161 is about 34992.0442529441. The cubic root of 1224443161 is about 1069.8253306170.

Adding to 1224443161 its reverse (1613444221), we get a palindrome (2837887382).

The spelling of 1224443161 in words is "one billion, two hundred twenty-four million, four hundred forty-three thousand, one hundred sixty-one".