12220112032321 has 2 divisors, whose sum is σ = 12220112032322. Its totient is φ = 12220112032320.

The previous prime is 12220112032319. The next prime is 12220112032351. The reversal of 12220112032321 is 12323021102221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10979706382096 + 1240405650225 = 3313564^2 + 1113735^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220112032321 - 2¹ = 12220112032319 is a prime.

It is a super-2 number, since 2×12220112032321² (a number of 27 digits) contains 22 as substring.

Together with 12220112032319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12220112032292 and 12220112032301.

It is not a weakly prime, because it can be changed into another prime (12220112032351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110056016160 + 6110056016161.

It is an arithmetic number, because the mean of its divisors is an integer number (6110056016161).

Almost surely, 2^{12220112032321} is an apocalyptic number.

It is an amenable number.

12220112032321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220112032321 is an equidigital number, since it uses as much as digits as its factorization.

12220112032321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12220112032321 its reverse (12323021102221), we get a palindrome (24543133134542).

The spelling of 12220112032321 in words is "twelve trillion, two hundred twenty billion, one hundred twelve million, thirty-two thousand, three hundred twenty-one".