1212311101279 has 2 divisors, whose sum is σ = 1212311101280. Its totient is φ = 1212311101278.

The previous prime is 1212311101271. The next prime is 1212311101307. The reversal of 1212311101279 is 9721011132121.

It is a weak prime.

It is an emirp because it is prime and its reverse (9721011132121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212311101279 - 2³ = 1212311101271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212311101279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212311101271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606155550639 + 606155550640.

It is an arithmetic number, because the mean of its divisors is an integer number (606155550640).

Almost surely, 2^{1212311101279} is an apocalyptic number.

1212311101279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212311101279 is an equidigital number, since it uses as much as digits as its factorization.

1212311101279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 31.

The spelling of 1212311101279 in words is "one trillion, two hundred twelve billion, three hundred eleven million, one hundred one thousand, two hundred seventy-nine".