1213554243224 has 16 divisors (see below), whose sum is σ = 2275693623000. Its totient is φ = 606702610432.

The previous prime is 1213554243211. The next prime is 1213554243227. The reversal of 1213554243224 is 4223424553121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213554243227) 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, 9244649 + ... + 9375000.

Almost surely, 2^{1213554243224} is an apocalyptic number.

It is an amenable number.

1213554243224 is a deficient number, since it is larger than the sum of its proper divisors (1062139379776).

1213554243224 is a wasteful number, since it uses less digits than its factorization.

1213554243224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18627802 (or 18627798 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

Adding to 1213554243224 its reverse (4223424553121), we get a palindrome (5436978796345).

The spelling of 1213554243224 in words is "one trillion, two hundred thirteen billion, five hundred fifty-four million, two hundred forty-three thousand, two hundred twenty-four".