21303127869 has 16 divisors (see below), whose sum is σ = 28530096000. Its totient is φ = 14139251136.

The previous prime is 21303127849. The next prime is 21303127889. The reversal of 21303127869 is 96872130312.

It is an interprime number because it is at equal distance from previous prime (21303127849) and next prime (21303127889).

It is not a de Polignac number, because 21303127869 - 2⁸ = 21303127613 is a prime.

It is a super-2 number, since 2×21303127869² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21303127869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303127829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668112 + ... + 699270.

It is an arithmetic number, because the mean of its divisors is an integer number (1783131000).

Almost surely, 2^21303127869 is an apocalyptic number.

It is an amenable number.

21303127869 is a deficient number, since it is larger than the sum of its proper divisors (7226968131).

21303127869 is a wasteful number, since it uses less digits than its factorization.

21303127869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32164.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 21303127869 in words is "twenty-one billion, three hundred three million, one hundred twenty-seven thousand, eight hundred sixty-nine".