1224117721968 has 40 divisors (see below), whose sum is σ = 3162675337728. Its totient is φ = 407991340992.

The previous prime is 1224117721963. The next prime is 1224117722011. The reversal of 1224117721968 is 8691277114221.

It is a super-2 number, since 2×1224117721968² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1224117721968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224117721961) 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 in 7 ways as a sum of consecutive naturals, for example, 1082530 + ... + 1902657.

Almost surely, 2^{1224117721968} is an apocalyptic number.

It is an amenable number.

1224117721968 is an abundant number, since it is smaller than the sum of its proper divisors (1938557615760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1224117721968 is a wasteful number, since it uses less digits than its factorization.

1224117721968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993741 (or 2993735 counting only the distinct ones).

The product of its digits is 677376, while the sum is 51.

The spelling of 1224117721968 in words is "one trillion, two hundred twenty-four billion, one hundred seventeen million, seven hundred twenty-one thousand, nine hundred sixty-eight".