1212311032949 has 2 divisors, whose sum is σ = 1212311032950. Its totient is φ = 1212311032948.

The previous prime is 1212311032943. The next prime is 1212311033029. The reversal of 1212311032949 is 9492301132121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810012600049 + 402298432900 = 900007^2 + 634270^2 .

It is an emirp because it is prime and its reverse (9492301132121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212311032949 - 2³² = 1208016065653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212311032943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606155516474 + 606155516475.

It is an arithmetic number, because the mean of its divisors is an integer number (606155516475).

Almost surely, 2^{1212311032949} is an apocalyptic number.

It is an amenable number.

1212311032949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212311032949 is an equidigital number, since it uses as much as digits as its factorization.

1212311032949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 1212311032949 in words is "one trillion, two hundred twelve billion, three hundred eleven million, thirty-two thousand, nine hundred forty-nine".