1216824885922 has 8 divisors (see below), whose sum is σ = 1932604230636. Its totient is φ = 572623475712.

The previous prime is 1216824885917. The next prime is 1216824885943. The reversal of 1216824885922 is 2295884286121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1211802470761 + 5022415161 = 1100819^2 + 70869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17894483583 + ... + 17894483650.

Almost surely, 2^{1216824885922} is an apocalyptic number.

1216824885922 is a deficient number, since it is larger than the sum of its proper divisors (715779344714).

1216824885922 is a wasteful number, since it uses less digits than its factorization.

1216824885922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35788967252.

The product of its digits is 8847360, while the sum is 58.

The spelling of 1216824885922 in words is "one trillion, two hundred sixteen billion, eight hundred twenty-four million, eight hundred eighty-five thousand, nine hundred twenty-two".