1223278116352 has 40 divisors (see below), whose sum is σ = 2587941566496. Its totient is φ = 575660285952.

The previous prime is 1223278116323. The next prime is 1223278116373. The reversal of 1223278116352 is 2536118723221.

It is a junction number, because it is equal to n+sod(n) for n = 1223278116299 and 1223278116308.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 70262328 + ... + 70279735.

Almost surely, 2^{1223278116352} is an apocalyptic number.

It is an amenable number.

1223278116352 is an abundant number, since it is smaller than the sum of its proper divisors (1364663450144).

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

1223278116352 is an equidigital number, since it uses as much as digits as its factorization.

1223278116352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140542098 (or 140542082 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The spelling of 1223278116352 in words is "one trillion, two hundred twenty-three billion, two hundred seventy-eight million, one hundred sixteen thousand, three hundred fifty-two".