1204224013 has 2 divisors, whose sum is σ = 1204224014. Its totient is φ = 1204224012.

The previous prime is 1204223981. The next prime is 1204224037. The reversal of 1204224013 is 3104224021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1010095524 + 194128489 = 31782^2 + 13933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204224013 - 2⁵ = 1204223981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204224613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602112006 + 602112007.

It is an arithmetic number, because the mean of its divisors is an integer number (602112007).

Almost surely, 2^1204224013 is an apocalyptic number.

It is an amenable number.

1204224013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204224013 is an equidigital number, since it uses as much as digits as its factorization.

1204224013 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 1204224013 is about 34701.9309693279. The cubic root of 1204224013 is about 1063.9039656126.

Adding to 1204224013 its reverse (3104224021), we get a palindrome (4308448034).

The spelling of 1204224013 in words is "one billion, two hundred four million, two hundred twenty-four thousand, thirteen".