12202340221 has 2 divisors, whose sum is σ = 12202340222. Its totient is φ = 12202340220.

The previous prime is 12202340219. The next prime is 12202340231. The reversal of 12202340221 is 12204320221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12130599321 + 71740900 = 110139^2 + 8470^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202340221 - 2¹ = 12202340219 is a prime.

Together with 12202340219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12202340231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6101170110 + 6101170111.

It is an arithmetic number, because the mean of its divisors is an integer number (6101170111).

Almost surely, 2^12202340221 is an apocalyptic number.

It is an amenable number.

12202340221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12202340221 is an equidigital number, since it uses as much as digits as its factorization.

12202340221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12202340221 its reverse (12204320221), we get a palindrome (24406660442).

The spelling of 12202340221 in words is "twelve billion, two hundred two million, three hundred forty thousand, two hundred twenty-one".