1228559252969 has 2 divisors, whose sum is σ = 1228559252970. Its totient is φ = 1228559252968.

The previous prime is 1228559252957. The next prime is 1228559252983. The reversal of 1228559252969 is 9692529558221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 636944455744 + 591614797225 = 798088^2 + 769165^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228559252969 - 2²⁴ = 1228542475753 is a prime.

It is a super-2 number, since 2×1228559252969² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1228559252069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614279626484 + 614279626485.

It is an arithmetic number, because the mean of its divisors is an integer number (614279626485).

Almost surely, 2^{1228559252969} is an apocalyptic number.

It is an amenable number.

1228559252969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228559252969 is an equidigital number, since it uses as much as digits as its factorization.

1228559252969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984000, while the sum is 65.

The spelling of 1228559252969 in words is "one trillion, two hundred twenty-eight billion, five hundred fifty-nine million, two hundred fifty-two thousand, nine hundred sixty-nine".