1204001213 has 2 divisors, whose sum is σ = 1204001214. Its totient is φ = 1204001212.

The previous prime is 1204001179. The next prime is 1204001221. The reversal of 1204001213 is 3121004021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 728892004 + 475109209 = 26998^2 + 21797^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204001213 - 2²⁶ = 1136892349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204001233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602000606 + 602000607.

It is an arithmetic number, because the mean of its divisors is an integer number (602000607).

Almost surely, 2^1204001213 is an apocalyptic number.

It is an amenable number.

1204001213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204001213 is an equidigital number, since it uses as much as digits as its factorization.

1204001213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1204001213 is about 34698.7206248300. The cubic root of 1204001213 is about 1063.8383486894.

Adding to 1204001213 its reverse (3121004021), we get a palindrome (4325005234).

The spelling of 1204001213 in words is "one billion, two hundred four million, one thousand, two hundred thirteen".