12220001131321 has 4 divisors (see below), whose sum is σ = 12518049939444. Its totient is φ = 11921952323200.

The previous prime is 12220001131241. The next prime is 12220001131409. The reversal of 12220001131321 is 12313110002221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5225224515625 + 6994776615696 = 2285875^2 + 2644764^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220001131321 - 2²¹ = 12219999034169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220001134321) 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 3 ways as a sum of consecutive naturals, for example, 149024404000 + ... + 149024404081.

It is an arithmetic number, because the mean of its divisors is an integer number (3129512484861).

Almost surely, 2^{12220001131321} is an apocalyptic number.

It is an amenable number.

12220001131321 is a deficient number, since it is larger than the sum of its proper divisors (298048808123).

12220001131321 is an equidigital number, since it uses as much as digits as its factorization.

12220001131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298048808122.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12220001131321 its reverse (12313110002221), we get a palindrome (24533111133542).

The spelling of 12220001131321 in words is "twelve trillion, two hundred twenty billion, one million, one hundred thirty-one thousand, three hundred twenty-one".