2321022320021 has 8 divisors (see below), whose sum is σ = 2330117665560. Its totient is φ = 2311927472128.

The previous prime is 2321022320009. The next prime is 2321022320083. The reversal of 2321022320021 is 1200232201232.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72851947921 + 2248170372100 = 269911^2 + 1499390^2 .

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 2321022320021 - 2¹⁰ = 2321022318997 is a prime.

It is a super-2 number, since 2×2321022320021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2321022319975 and 2321022320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321022320521) 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, 11254385 + ... + 11458761.

It is an arithmetic number, because the mean of its divisors is an integer number (291264708195).

Almost surely, 2^{2321022320021} is an apocalyptic number.

It is an amenable number.

2321022320021 is a deficient number, since it is larger than the sum of its proper divisors (9095345539).

2321022320021 is a wasteful number, since it uses less digits than its factorization.

2321022320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248823.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 2321022320021 its reverse (1200232201232), we get a palindrome (3521254521253).

The spelling of 2321022320021 in words is "two trillion, three hundred twenty-one billion, twenty-two million, three hundred twenty thousand, twenty-one".