1272217127 has 2 divisors, whose sum is σ = 1272217128. Its totient is φ = 1272217126.

The previous prime is 1272217097. The next prime is 1272217157. The reversal of 1272217127 is 7217122721.

It is a balanced prime because it is at equal distance from previous prime (1272217097) and next prime (1272217157).

It is an emirp because it is prime and its reverse (7217122721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1272217127 - 2¹² = 1272213031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1272217093 and 1272217102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272217157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636108563 + 636108564.

It is an arithmetic number, because the mean of its divisors is an integer number (636108564).

Almost surely, 2^1272217127 is an apocalyptic number.

1272217127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272217127 is an equidigital number, since it uses as much as digits as its factorization.

1272217127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5488, while the sum is 32.

The square root of 1272217127 is about 35668.1528397533. The cubic root of 1272217127 is about 1083.5619496898.

Adding to 1272217127 its reverse (7217122721), we get a palindrome (8489339848).

The spelling of 1272217127 in words is "one billion, two hundred seventy-two million, two hundred seventeen thousand, one hundred twenty-seven".