1220430213321 has 32 divisors (see below), whose sum is σ = 1808936478720. Its totient is φ = 725590008000.

The previous prime is 1220430213307. The next prime is 1220430213377. The reversal of 1220430213321 is 1233120340221.

It is not a de Polignac number, because 1220430213321 - 2⁷ = 1220430213193 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1220430213291 and 1220430213300.

It is not an unprimeable number, because it can be changed into a prime (1220430218321) 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 31 ways as a sum of consecutive naturals, for example, 12458310 + ... + 12555888.

It is an arithmetic number, because the mean of its divisors is an integer number (56529264960).

Almost surely, 2^{1220430213321} is an apocalyptic number.

1220430213321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220430213321 is a deficient number, since it is larger than the sum of its proper divisors (588506265399).

1220430213321 is a wasteful number, since it uses less digits than its factorization.

1220430213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104797.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1220430213321 its reverse (1233120340221), we get a palindrome (2453550553542).

The spelling of 1220430213321 in words is "one trillion, two hundred twenty billion, four hundred thirty million, two hundred thirteen thousand, three hundred twenty-one".