1273107121 has 32 divisors (see below), whose sum is σ = 1521950976. Its totient is φ = 1049760000.

The previous prime is 1273107097. The next prime is 1273107127. The reversal of 1273107121 is 1217013721.

It is a 8-Lehmer number, since φ(1273107121) divides (1273107121-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 1273107121 - 2¹¹ = 1273105073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1273107127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2613940 + ... + 2614426.

It is an arithmetic number, because the mean of its divisors is an integer number (47560968).

Almost surely, 2^1273107121 is an apocalyptic number.

1273107121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1273107121 is a deficient number, since it is larger than the sum of its proper divisors (248843855).

1273107121 is a wasteful number, since it uses less digits than its factorization.

1273107121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 1273107121 is about 35680.6266901242. The cubic root of 1273107121 is about 1083.8145634991.

It can be divided in two parts, 127310 and 7121, that added together give a palindrome (134431).

The spelling of 1273107121 in words is "one billion, two hundred seventy-three million, one hundred seven thousand, one hundred twenty-one".