1272330332721 has 96 divisors (see below), whose sum is σ = 2220377702400. Its totient is φ = 686616416640.

The previous prime is 1272330332717. The next prime is 1272330332797.

1272330332721 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 3 + 303 + 327 + 21 = 666.

1272330332721 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1272330332721 - 2² = 1272330332717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272330332621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 181265950 + ... + 181272968.

It is an arithmetic number, because the mean of its divisors is an integer number (23128934400).

Almost surely, 2^{1272330332721} is an apocalyptic number.

It is an amenable number.

1272330332721 is a deficient number, since it is larger than the sum of its proper divisors (948047369679).

1272330332721 is a wasteful number, since it uses less digits than its factorization.

1272330332721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219 (or 9216 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The spelling of 1272330332721 in words is "one trillion, two hundred seventy-two billion, three hundred thirty million, three hundred thirty-two thousand, seven hundred twenty-one".