12212202200221 has 2 divisors, whose sum is σ = 12212202200222. Its totient is φ = 12212202200220.

The previous prime is 12212202200207. The next prime is 12212202200239. The reversal of 12212202200221 is 12200220221221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11729350934596 + 482851265625 = 3424814^2 + 694875^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212202200221 - 2¹¹ = 12212202198173 is a prime.

It is a super-3 number, since 3×12212202200221³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212202200621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106101100110 + 6106101100111.

It is an arithmetic number, because the mean of its divisors is an integer number (6106101100111).

Almost surely, 2^{12212202200221} is an apocalyptic number.

It is an amenable number.

12212202200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212202200221 is an equidigital number, since it uses as much as digits as its factorization.

12212202200221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12212202200221 its reverse (12200220221221), we get a palindrome (24412422421442).

The spelling of 12212202200221 in words is "twelve trillion, two hundred twelve billion, two hundred two million, two hundred thousand, two hundred twenty-one".