21321341269 has 8 divisors (see below), whose sum is σ = 21444576768. Its totient is φ = 21198227040.

The previous prime is 21321341267. The next prime is 21321341281. The reversal of 21321341269 is 96214312312.

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 21321341269 - 2¹ = 21321341267 is a prime.

It is a super-2 number, since 2×21321341269² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321341267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334969 + ... + 393505.

It is an arithmetic number, because the mean of its divisors is an integer number (2680572096).

Almost surely, 2^21321341269 is an apocalyptic number.

It is an amenable number.

21321341269 is a deficient number, since it is larger than the sum of its proper divisors (123235499).

21321341269 is a wasteful number, since it uses less digits than its factorization.

21321341269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60635.

The product of its digits is 15552, while the sum is 34.

The spelling of 21321341269 in words is "twenty-one billion, three hundred twenty-one million, three hundred forty-one thousand, two hundred sixty-nine".