2321004021 has 12 divisors (see below), whose sum is σ = 3599924832. Its totient is φ = 1326287928.

The previous prime is 2321004019. The next prime is 2321004041. The reversal of 2321004021 is 1204001232.

It is not a de Polignac number, because 2321004021 - 2¹ = 2321004019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321004001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7894425 + ... + 7894718.

It is an arithmetic number, because the mean of its divisors is an integer number (299993736).

Almost surely, 2^2321004021 is an apocalyptic number.

2321004021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2321004021 is a deficient number, since it is larger than the sum of its proper divisors (1278920811).

2321004021 is a wasteful number, since it uses less digits than its factorization.

2321004021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15789160 (or 15789153 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2321004021 is about 48176.7996135069. The cubic root of 2321004021 is about 1324.0121310684.

Adding to 2321004021 its reverse (1204001232), we get a palindrome (3525005253).

The spelling of 2321004021 in words is "two billion, three hundred twenty-one million, four thousand, twenty-one".