11211331867 has 2 divisors, whose sum is σ = 11211331868. Its totient is φ = 11211331866.

The previous prime is 11211331861. The next prime is 11211331889. The reversal of 11211331867 is 76813311211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11211331867 - 2¹¹ = 11211329819 is a prime.

It is not a weakly prime, because it can be changed into another prime (11211331861) 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, 5605665933 + 5605665934.

It is an arithmetic number, because the mean of its divisors is an integer number (5605665934).

Almost surely, 2^11211331867 is an apocalyptic number.

11211331867 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211331867 is an equidigital number, since it uses as much as digits as its factorization.

11211331867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The spelling of 11211331867 in words is "eleven billion, two hundred eleven million, three hundred thirty-one thousand, eight hundred sixty-seven".