13042201261 has 2 divisors, whose sum is σ = 13042201262. Its totient is φ = 13042201260.

The previous prime is 13042201189. The next prime is 13042201273. The reversal of 13042201261 is 16210224031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12784598761 + 257602500 = 113069^2 + 16050^2 .

It is a cyclic number.

It is not a de Polignac number, because 13042201261 - 2²¹ = 13040104109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13042201061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6521100630 + 6521100631.

It is an arithmetic number, because the mean of its divisors is an integer number (6521100631).

Almost surely, 2^13042201261 is an apocalyptic number.

It is an amenable number.

13042201261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13042201261 is an equidigital number, since it uses as much as digits as its factorization.

13042201261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13042201261 its reverse (16210224031), we get a palindrome (29252425292).

The spelling of 13042201261 in words is "thirteen billion, forty-two million, two hundred one thousand, two hundred sixty-one".