1271315712421 has 8 divisors (see below), whose sum is σ = 1282838192064. Its totient is φ = 1259825737440.

The previous prime is 1271315712413. The next prime is 1271315712437. The reversal of 1271315712421 is 1242175131721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1271315712421 - 2³ = 1271315712413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271315712521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8047585 + ... + 8204038.

It is an arithmetic number, because the mean of its divisors is an integer number (160354774008).

Almost surely, 2^{1271315712421} is an apocalyptic number.

It is an amenable number.

1271315712421 is a deficient number, since it is larger than the sum of its proper divisors (11522479643).

1271315712421 is a wasteful number, since it uses less digits than its factorization.

1271315712421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16252331.

The product of its digits is 23520, while the sum is 37.

The spelling of 1271315712421 in words is "one trillion, two hundred seventy-one billion, three hundred fifteen million, seven hundred twelve thousand, four hundred twenty-one".