122303202131221 has 2 divisors, whose sum is σ = 122303202131222. Its totient is φ = 122303202131220.

The previous prime is 122303202131219. The next prime is 122303202131239. The reversal of 122303202131221 is 122131202303221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107248910771025 + 15054291360196 = 10356105^2 + 3879986^2 .

It is a cyclic number.

It is not a de Polignac number, because 122303202131221 - 2¹ = 122303202131219 is a prime.

Together with 122303202131219, 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 (122303202131251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61151601065610 + 61151601065611.

It is an arithmetic number, because the mean of its divisors is an integer number (61151601065611).

Almost surely, 2^{122303202131221} is an apocalyptic number.

It is an amenable number.

122303202131221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122303202131221 is an equidigital number, since it uses as much as digits as its factorization.

122303202131221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 122303202131221 its reverse (122131202303221), we get a palindrome (244434404434442).

The spelling of 122303202131221 in words is "one hundred twenty-two trillion, three hundred three billion, two hundred two million, one hundred thirty-one thousand, two hundred twenty-one".