11215811067 has 32 divisors (see below), whose sum is σ = 15562659840. Its totient is φ = 7177248000.

The previous prime is 11215811053. The next prime is 11215811069. The reversal of 11215811067 is 76011851211.

It is not a de Polignac number, because 11215811067 - 2¹¹ = 11215809019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11215811069) 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 in 31 ways as a sum of consecutive naturals, for example, 9577392 + ... + 9578562.

It is an arithmetic number, because the mean of its divisors is an integer number (486333120).

Almost surely, 2^11215811067 is an apocalyptic number.

11215811067 is a deficient number, since it is larger than the sum of its proper divisors (4346848773).

11215811067 is a wasteful number, since it uses less digits than its factorization.

11215811067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its (nonzero) digits is 3360, while the sum is 33.

The spelling of 11215811067 in words is "eleven billion, two hundred fifteen million, eight hundred eleven thousand, sixty-seven".