2321222021 has 8 divisors (see below), whose sum is σ = 2339232000. Its totient is φ = 2303231040.

The previous prime is 2321221943. The next prime is 2321222063. The reversal of 2321222021 is 1202221232.

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 2321222021 - 2¹⁰ = 2321220997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321222221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329981 + ... + 336941.

It is an arithmetic number, because the mean of its divisors is an integer number (292404000).

Almost surely, 2^2321222021 is an apocalyptic number.

It is an amenable number.

2321222021 is a deficient number, since it is larger than the sum of its proper divisors (18009979).

2321222021 is a wasteful number, since it uses less digits than its factorization.

2321222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9499.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2321222021 is about 48179.0620601937. The cubic root of 2321222021 is about 1324.0535823263.

Adding to 2321222021 its reverse (1202221232), we get a palindrome (3523443253).

The spelling of 2321222021 in words is "two billion, three hundred twenty-one million, two hundred twenty-two thousand, twenty-one".