11212019747867 has 2 divisors, whose sum is σ = 11212019747868. Its totient is φ = 11212019747866.

The previous prime is 11212019747843. The next prime is 11212019747921. The reversal of 11212019747867 is 76874791021211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11212019747867 - 2³⁴ = 11194839878683 is a prime.

It is not a weakly prime, because it can be changed into another prime (11212019747567) 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, 5606009873933 + 5606009873934.

It is an arithmetic number, because the mean of its divisors is an integer number (5606009873934).

Almost surely, 2^{11212019747867} is an apocalyptic number.

11212019747867 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212019747867 is an equidigital number, since it uses as much as digits as its factorization.

11212019747867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2370816, while the sum is 56.

The spelling of 11212019747867 in words is "eleven trillion, two hundred twelve billion, nineteen million, seven hundred forty-seven thousand, eight hundred sixty-seven".