12202220221 has 2 divisors, whose sum is σ = 12202220222. Its totient is φ = 12202220220.

The previous prime is 12202220201. The next prime is 12202220257.

12202220221 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12102420121 + 99800100 = 110011^2 + 9990^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 12202220221 - 2²³ = 12193831613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12202220195 and 12202220204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12202220201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6101110110 + 6101110111.

It is an arithmetic number, because the mean of its divisors is an integer number (6101110111).

Almost surely, 2^12202220221 is an apocalyptic number.

It is an amenable number.

12202220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12202220221 is an equidigital number, since it uses as much as digits as its factorization.

12202220221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

The spelling of 12202220221 in words is "twelve billion, two hundred two million, two hundred twenty thousand, two hundred twenty-one".