21370885069271 has 4 divisors (see below), whose sum is σ = 21370945117344. Its totient is φ = 21370825021200.

The previous prime is 21370885069231. The next prime is 21370885069297. The reversal of 21370885069271 is 17296058807312.

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

It is a cyclic number.

It is not a de Polignac number, because 21370885069271 - 2³⁸ = 21096007162327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21370885069271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21370885069211) 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, 29486990 + ... + 30203051.

It is an arithmetic number, because the mean of its divisors is an integer number (5342736279336).

Almost surely, 2^{21370885069271} is an apocalyptic number.

21370885069271 is a deficient number, since it is larger than the sum of its proper divisors (60048073).

21370885069271 is an equidigital number, since it uses as much as digits as its factorization.

21370885069271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60048072.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 21370885069271 in words is "twenty-one trillion, three hundred seventy billion, eight hundred eighty-five million, sixty-nine thousand, two hundred seventy-one".