1212785303 has 2 divisors, whose sum is σ = 1212785304. Its totient is φ = 1212785302.

The previous prime is 1212785267. The next prime is 1212785309. The reversal of 1212785303 is 3035872121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212785303 - 2²⁶ = 1145676439 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212785303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212785309) 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, 606392651 + 606392652.

It is an arithmetic number, because the mean of its divisors is an integer number (606392652).

Almost surely, 2^1212785303 is an apocalyptic number.

1212785303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212785303 is an equidigital number, since it uses as much as digits as its factorization.

1212785303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1212785303 is about 34825.0671643286. The cubic root of 1212785303 is about 1066.4192479638.

The spelling of 1212785303 in words is "one billion, two hundred twelve million, seven hundred eighty-five thousand, three hundred three".