13321323202261 has 2 divisors, whose sum is σ = 13321323202262. Its totient is φ = 13321323202260.

The previous prime is 13321323202217. The next prime is 13321323202361. The reversal of 13321323202261 is 16220232312331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8259358688100 + 5061964514161 = 2873910^2 + 2249881^2 .

It is a cyclic number.

It is not a de Polignac number, because 13321323202261 - 2⁷ = 13321323202133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13321323202211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660661601130 + 6660661601131.

It is an arithmetic number, because the mean of its divisors is an integer number (6660661601131).

Almost surely, 2^{13321323202261} is an apocalyptic number.

It is an amenable number.

13321323202261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321323202261 is an equidigital number, since it uses as much as digits as its factorization.

13321323202261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 13321323202261 its reverse (16220232312331), we get a palindrome (29541555514592).

The spelling of 13321323202261 in words is "thirteen trillion, three hundred twenty-one billion, three hundred twenty-three million, two hundred two thousand, two hundred sixty-one".