1212230447 has 2 divisors, whose sum is σ = 1212230448. Its totient is φ = 1212230446.

The previous prime is 1212230401. The next prime is 1212230471. The reversal of 1212230447 is 7440322121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212230447 - 2¹⁴ = 1212214063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212230497) 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, 606115223 + 606115224.

It is an arithmetic number, because the mean of its divisors is an integer number (606115224).

Almost surely, 2^1212230447 is an apocalyptic number.

1212230447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212230447 is an equidigital number, since it uses as much as digits as its factorization.

1212230447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1212230447 is about 34817.0999223083. The cubic root of 1212230447 is about 1066.2565922499.

Adding to 1212230447 its reverse (7440322121), we get a palindrome (8652552568).

The spelling of 1212230447 in words is "one billion, two hundred twelve million, two hundred thirty thousand, four hundred forty-seven".