12220270221221 has 2 divisors, whose sum is σ = 12220270221222. Its totient is φ = 12220270221220.

The previous prime is 12220270221191. The next prime is 12220270221223. The reversal of 12220270221221 is 12212207202221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12193295772100 + 26974449121 = 3491890^2 + 164239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220270221221 is a prime.

Together with 12220270221223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220270221223) 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 as a sum of consecutive naturals, namely, 6110135110610 + 6110135110611.

It is an arithmetic number, because the mean of its divisors is an integer number (6110135110611).

Almost surely, 2^{12220270221221} is an apocalyptic number.

It is an amenable number.

12220270221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220270221221 is an equidigital number, since it uses as much as digits as its factorization.

12220270221221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 12220270221221 its reverse (12212207202221), we get a palindrome (24432477423442).

The spelling of 12220270221221 in words is "twelve trillion, two hundred twenty billion, two hundred seventy million, two hundred twenty-one thousand, two hundred twenty-one".