1216204031024 has 40 divisors (see below), whose sum is σ = 2360506931280. Its totient is φ = 607041388800.

The previous prime is 1216204030897. The next prime is 1216204031033. The reversal of 1216204031024 is 4201304026121.

It is a junction number, because it is equal to n+sod(n) for n = 1216204030984 and 1216204031002.

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 7 ways as a sum of consecutive naturals, for example, 57300734 + ... + 57321954.

It is an arithmetic number, because the mean of its divisors is an integer number (59012673282).

Almost surely, 2^{1216204031024} is an apocalyptic number.

It is an amenable number.

1216204031024 is a deficient number, since it is larger than the sum of its proper divisors (1144302900256).

1216204031024 is a wasteful number, since it uses less digits than its factorization.

1216204031024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27309 (or 27303 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1216204031024 its reverse (4201304026121), we get a palindrome (5417508057145).

The spelling of 1216204031024 in words is "one trillion, two hundred sixteen billion, two hundred four million, thirty-one thousand, twenty-four".