1271252277147 has 4 divisors (see below), whose sum is σ = 1695003036200. Its totient is φ = 847501518096.

The previous prime is 1271252277133. The next prime is 1271252277167. The reversal of 1271252277147 is 7417722521721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1271252277147 - 2⁸ = 1271252276891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1271252277096 and 1271252277105.

It is not an unprimeable number, because it can be changed into a prime (1271252277107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211875379522 + ... + 211875379527.

It is an arithmetic number, because the mean of its divisors is an integer number (423750759050).

Almost surely, 2^{1271252277147} is an apocalyptic number.

1271252277147 is a deficient number, since it is larger than the sum of its proper divisors (423750759053).

1271252277147 is an equidigital number, since it uses as much as digits as its factorization.

1271252277147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423750759052.

The product of its digits is 768320, while the sum is 48.

Adding to 1271252277147 its reverse (7417722521721), we get a palindrome (8688974798868).

The spelling of 1271252277147 in words is "one trillion, two hundred seventy-one billion, two hundred fifty-two million, two hundred seventy-seven thousand, one hundred forty-seven".