1204330121 has 2 divisors, whose sum is σ = 1204330122. Its totient is φ = 1204330120.

The previous prime is 1204330103. The next prime is 1204330123. The reversal of 1204330121 is 1210334021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 802928896 + 401401225 = 28336^2 + 20035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204330121 - 2¹⁰ = 1204329097 is a prime.

It is a super-2 number, since 2×1204330121² = 2900822080695749282, which contains 22 as substring.

Together with 1204330123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1204330121.

It is not a weakly prime, because it can be changed into another prime (1204330123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602165060 + 602165061.

It is an arithmetic number, because the mean of its divisors is an integer number (602165061).

Almost surely, 2^1204330121 is an apocalyptic number.

It is an amenable number.

1204330121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204330121 is an equidigital number, since it uses as much as digits as its factorization.

1204330121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1204330121 is about 34703.4597842924. The cubic root of 1204330121 is about 1063.9352126799.

Adding to 1204330121 its reverse (1210334021), we get a palindrome (2414664142).

The spelling of 1204330121 in words is "one billion, two hundred four million, three hundred thirty thousand, one hundred twenty-one".