12581022269 has 2 divisors, whose sum is σ = 12581022270. Its totient is φ = 12581022268.

The previous prime is 12581022257. The next prime is 12581022271. The reversal of 12581022269 is 96222018521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9208897369 + 3372124900 = 95963^2 + 58070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12581022269 is a prime.

It is a super-2 number, since 2×12581022269² (a number of 21 digits) contains 22 as substring.

Together with 12581022271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12581022169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6290511134 + 6290511135.

It is an arithmetic number, because the mean of its divisors is an integer number (6290511135).

Almost surely, 2^12581022269 is an apocalyptic number.

It is an amenable number.

12581022269 is a deficient number, since it is larger than the sum of its proper divisors (1).

12581022269 is an equidigital number, since it uses as much as digits as its factorization.

12581022269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 12581022269 in words is "twelve billion, five hundred eighty-one million, twenty-two thousand, two hundred sixty-nine".