1001224243 has 2 divisors, whose sum is σ = 1001224244. Its totient is φ = 1001224242.

The previous prime is 1001224207. The next prime is 1001224249. The reversal of 1001224243 is 3424221001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001224243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001224243.

It is not a weakly prime, because it can be changed into another prime (1001224249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500612121 + 500612122.

It is an arithmetic number, because the mean of its divisors is an integer number (500612122).

Almost surely, 2^1001224243 is an apocalyptic number.

1001224243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001224243 is an equidigital number, since it uses as much as digits as its factorization.

1001224243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1001224243 is about 31642.1276623428. The cubic root of 1001224243 is about 1000.4079145831.

Adding to 1001224243 its reverse (3424221001), we get a palindrome (4425445244).

The spelling of 1001224243 in words is "one billion, one million, two hundred twenty-four thousand, two hundred forty-three".