1212101047 has 2 divisors, whose sum is σ = 1212101048. Its totient is φ = 1212101046.

The previous prime is 1212101027. The next prime is 1212101053. The reversal of 1212101047 is 7401012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212101047 - 2⁷ = 1212100919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212101017) 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, 606050523 + 606050524.

It is an arithmetic number, because the mean of its divisors is an integer number (606050524).

Almost surely, 2^1212101047 is an apocalyptic number.

1212101047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212101047 is an equidigital number, since it uses as much as digits as its factorization.

1212101047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1212101047 is about 34815.2415904299. The cubic root of 1212101047 is about 1066.2186515781.

Adding to 1212101047 its reverse (7401012121), we get a palindrome (8613113168).

The spelling of 1212101047 in words is "one billion, two hundred twelve million, one hundred one thousand, forty-seven".