13123202212261 has 2 divisors, whose sum is σ = 13123202212262. Its totient is φ = 13123202212260.

The previous prime is 13123202212157. The next prime is 13123202212277. The reversal of 13123202212261 is 16221220232131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8517607228036 + 4605594984225 = 2918494^2 + 2146065^2 .

It is a cyclic number.

It is not a de Polignac number, because 13123202212261 - 2¹³ = 13123202204069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13123202218261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561601106130 + 6561601106131.

It is an arithmetic number, because the mean of its divisors is an integer number (6561601106131).

Almost surely, 2^{13123202212261} is an apocalyptic number.

It is an amenable number.

13123202212261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13123202212261 is an equidigital number, since it uses as much as digits as its factorization.

13123202212261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 13123202212261 its reverse (16221220232131), we get a palindrome (29344422444392).

The spelling of 13123202212261 in words is "thirteen trillion, one hundred twenty-three billion, two hundred two million, two hundred twelve thousand, two hundred sixty-one".