1213162641811 has 2 divisors, whose sum is σ = 1213162641812. Its totient is φ = 1213162641810.

The previous prime is 1213162641787. The next prime is 1213162641919. The reversal of 1213162641811 is 1181462613121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213162641811 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213162641011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606581320905 + 606581320906.

It is an arithmetic number, because the mean of its divisors is an integer number (606581320906).

Almost surely, 2^{1213162641811} is an apocalyptic number.

1213162641811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213162641811 is an equidigital number, since it uses as much as digits as its factorization.

1213162641811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 37.

The spelling of 1213162641811 in words is "one trillion, two hundred thirteen billion, one hundred sixty-two million, six hundred forty-one thousand, eight hundred eleven".