1200204251 has 2 divisors, whose sum is σ = 1200204252. Its totient is φ = 1200204250.

The previous prime is 1200204227. The next prime is 1200204253. The reversal of 1200204251 is 1524020021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200204251 - 2¹⁴ = 1200187867 is a prime.

Together with 1200204253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1200204253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600102125 + 600102126.

It is an arithmetic number, because the mean of its divisors is an integer number (600102126).

Almost surely, 2^1200204251 is an apocalyptic number.

1200204251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200204251 is an equidigital number, since it uses as much as digits as its factorization.

1200204251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1200204251 is about 34643.9641351852. The cubic root of 1200204251 is about 1062.7188571721.

Adding to 1200204251 its reverse (1524020021), we get a palindrome (2724224272).

The spelling of 1200204251 in words is "one billion, two hundred million, two hundred four thousand, two hundred fifty-one".