21310224321 has 8 divisors (see below), whose sum is σ = 29330201344. Its totient is φ = 13748531760.

The previous prime is 21310224317. The next prime is 21310224343. The reversal of 21310224321 is 12342201312.

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

It is not a de Polignac number, because 21310224321 - 2² = 21310224317 is a prime.

It is a super-2 number, since 2×21310224321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21310224361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114571006 + ... + 114571191.

It is an arithmetic number, because the mean of its divisors is an integer number (3666275168).

Almost surely, 2^21310224321 is an apocalyptic number.

It is an amenable number.

21310224321 is a deficient number, since it is larger than the sum of its proper divisors (8019977023).

21310224321 is a wasteful number, since it uses less digits than its factorization.

21310224321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229142231.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21310224321 its reverse (12342201312), we get a palindrome (33652425633).

The spelling of 21310224321 in words is "twenty-one billion, three hundred ten million, two hundred twenty-four thousand, three hundred twenty-one".