1220530789512 has 80 divisors (see below), whose sum is σ = 3528894336000. Its totient is φ = 393719603040.

The previous prime is 1220530789507. The next prime is 1220530789519. The reversal of 1220530789512 is 2159870350221.

1220530789512 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 53 + 0 + 7 + 89 + 512 = 666.

It is not an unprimeable number, because it can be changed into a prime (1220530789519) 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 19 ways as a sum of consecutive naturals, for example, 30359512 + ... + 30399687.

It is an arithmetic number, because the mean of its divisors is an integer number (44111179200).

Almost surely, 2^{1220530789512} is an apocalyptic number.

1220530789512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220530789512 is an abundant number, since it is smaller than the sum of its proper divisors (2308363546488).

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

1220530789512 is a wasteful number, since it uses less digits than its factorization.

1220530789512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60759248 (or 60759235 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 1220530789512 in words is "one trillion, two hundred twenty billion, five hundred thirty million, seven hundred eighty-nine thousand, five hundred twelve".