21220103230321 has 8 divisors (see below), whose sum is σ = 22162791432960. Its totient is φ = 20279087945952.

The previous prime is 21220103230237. The next prime is 21220103230327. The reversal of 21220103230321 is 12303230102212.

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 21220103230321 - 2¹⁷ = 21220103099249 is a prime.

It is a super-2 number, since 2×21220103230321² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21220103230292 and 21220103230301.

It is not an unprimeable number, because it can be changed into a prime (21220103230327) 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, 418203636 + ... + 418254373.

It is an arithmetic number, because the mean of its divisors is an integer number (2770348929120).

Almost surely, 2^{21220103230321} is an apocalyptic number.

It is an amenable number.

21220103230321 is a deficient number, since it is larger than the sum of its proper divisors (942688202639).

21220103230321 is a wasteful number, since it uses less digits than its factorization.

21220103230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836459135.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21220103230321 its reverse (12303230102212), we get a palindrome (33523333332533).

The spelling of 21220103230321 in words is "twenty-one trillion, two hundred twenty billion, one hundred three million, two hundred thirty thousand, three hundred twenty-one".