12220220220321 has 16 divisors (see below), whose sum is σ = 17092877247360. Its totient is φ = 7755101706240.

The previous prime is 12220220220319. The next prime is 12220220220331. The reversal of 12220220220321 is 12302202202221.

It is not a de Polignac number, because 12220220220321 - 2¹ = 12220220220319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12220220220311) 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 15 ways as a sum of consecutive naturals, for example, 989164960 + ... + 989177313.

It is an arithmetic number, because the mean of its divisors is an integer number (1068304827960).

Almost surely, 2^{12220220220321} is an apocalyptic number.

It is an amenable number.

12220220220321 is a deficient number, since it is larger than the sum of its proper divisors (4872657027039).

12220220220321 is a wasteful number, since it uses less digits than its factorization.

12220220220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978342376.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12220220220321 its reverse (12302202202221), we get a palindrome (24522422422542).

The spelling of 12220220220321 in words is "twelve trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty thousand, three hundred twenty-one".