21130301321 has 8 divisors (see below), whose sum is σ = 21322678560. Its totient is φ = 20938018752.

The previous prime is 21130301293. The next prime is 21130301327. The reversal of 21130301321 is 12310303112.

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 21130301321 - 2²² = 21126107017 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 21130301321.

It is not an unprimeable number, because it can be changed into a prime (21130301327) 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, 471590 + ... + 514448.

It is an arithmetic number, because the mean of its divisors is an integer number (2665334820).

Almost surely, 2^21130301321 is an apocalyptic number.

It is an amenable number.

21130301321 is a deficient number, since it is larger than the sum of its proper divisors (192377239).

21130301321 is a wasteful number, since it uses less digits than its factorization.

21130301321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47335.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21130301321 its reverse (12310303112), we get a palindrome (33440604433).

The spelling of 21130301321 in words is "twenty-one billion, one hundred thirty million, three hundred one thousand, three hundred twenty-one".