1216822605368 has 16 divisors (see below), whose sum is σ = 2304131915160. Its totient is φ = 602387428000.

The previous prime is 1216822605367. The next prime is 1216822605431. The reversal of 1216822605368 is 8635062286121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216822605367) 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 3 ways as a sum of consecutive naturals, for example, 752983478 + ... + 752985093.

Almost surely, 2^{1216822605368} is an apocalyptic number.

It is an amenable number.

1216822605368 is a deficient number, since it is larger than the sum of its proper divisors (1087309309792).

1216822605368 is a wasteful number, since it uses less digits than its factorization.

1216822605368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505968678 (or 1505968674 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 1216822605368 in words is "one trillion, two hundred sixteen billion, eight hundred twenty-two million, six hundred five thousand, three hundred sixty-eight".