1220021230329 has 96 divisors (see below), whose sum is σ = 2014536695808. Its totient is φ = 704785536000.

The previous prime is 1220021230321. The next prime is 1220021230331. The reversal of 1220021230329 is 9230321200221.

1220021230329 is a `hidden beast` number, since 12 + 200 + 2 + 123 + 0 + 329 = 666.

It is not a de Polignac number, because 1220021230329 - 2³ = 1220021230321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1220021230321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 62803512 + ... + 62822934.

It is an arithmetic number, because the mean of its divisors is an integer number (20984757248).

Almost surely, 2^{1220021230329} is an apocalyptic number.

It is an amenable number.

1220021230329 is a deficient number, since it is larger than the sum of its proper divisors (794515465479).

1220021230329 is a wasteful number, since it uses less digits than its factorization.

1220021230329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19779 (or 19776 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 1220021230329 in words is "one trillion, two hundred twenty billion, twenty-one million, two hundred thirty thousand, three hundred twenty-nine".