1212303247 has 2 divisors, whose sum is σ = 1212303248. Its totient is φ = 1212303246.

The previous prime is 1212303221. The next prime is 1212303263. The reversal of 1212303247 is 7423032121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212303247 - 2⁷ = 1212303119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212303277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606151623 + 606151624.

It is an arithmetic number, because the mean of its divisors is an integer number (606151624).

Almost surely, 2^1212303247 is an apocalyptic number.

1212303247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212303247 is an equidigital number, since it uses as much as digits as its factorization.

1212303247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 1212303247 is about 34818.1453699073. The cubic root of 1212303247 is about 1066.2779363561.

Adding to 1212303247 its reverse (7423032121), we get a palindrome (8635335368).

The spelling of 1212303247 in words is "one billion, two hundred twelve million, three hundred three thousand, two hundred forty-seven".