1211064247 has 2 divisors, whose sum is σ = 1211064248. Its totient is φ = 1211064246.

The previous prime is 1211064193. The next prime is 1211064263. The reversal of 1211064247 is 7424601121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211064247 - 2⁷ = 1211064119 is a prime.

It is a super-2 number, since 2×1211064247² = 2933353220723354018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211064277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605532123 + 605532124.

It is an arithmetic number, because the mean of its divisors is an integer number (605532124).

Almost surely, 2^1211064247 is an apocalyptic number.

1211064247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211064247 is an equidigital number, since it uses as much as digits as its factorization.

1211064247 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 28.

The square root of 1211064247 is about 34800.3483746930. The cubic root of 1211064247 is about 1065.9145595380.

Adding to 1211064247 its reverse (7424601121), we get a palindrome (8635665368).

The spelling of 1211064247 in words is "one billion, two hundred eleven million, sixty-four thousand, two hundred forty-seven".