12220320321021 has 8 divisors (see below), whose sum is σ = 17002184794560. Its totient is φ = 7792668030752.

The previous prime is 12220320321007. The next prime is 12220320321029. The reversal of 12220320321021 is 12012302302221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12220320321021 - 2¹⁹ = 12220319796733 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220320321029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88553045736 + ... + 88553045873.

It is an arithmetic number, because the mean of its divisors is an integer number (2125273099320).

Almost surely, 2^{12220320321021} is an apocalyptic number.

It is an amenable number.

12220320321021 is a deficient number, since it is larger than the sum of its proper divisors (4781864473539).

12220320321021 is a wasteful number, since it uses less digits than its factorization.

12220320321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177106091635.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12220320321021 its reverse (12012302302221), we get a palindrome (24232622623242).

The spelling of 12220320321021 in words is "twelve trillion, two hundred twenty billion, three hundred twenty million, three hundred twenty-one thousand, twenty-one".