1265113242229 has 2 divisors, whose sum is σ = 1265113242230. Its totient is φ = 1265113242228.

The previous prime is 1265113242227. The next prime is 1265113242361. The reversal of 1265113242229 is 9222423115621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110121426129 + 154991816100 = 1053623^2 + 393690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265113242229 - 2¹ = 1265113242227 is a prime.

Together with 1265113242227, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1265113242191 and 1265113242200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265113242227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632556621114 + 632556621115.

It is an arithmetic number, because the mean of its divisors is an integer number (632556621115).

Almost surely, 2^{1265113242229} is an apocalyptic number.

It is an amenable number.

1265113242229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265113242229 is an equidigital number, since it uses as much as digits as its factorization.

1265113242229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The spelling of 1265113242229 in words is "one trillion, two hundred sixty-five billion, one hundred thirteen million, two hundred forty-two thousand, two hundred twenty-nine".