2321001002021 has 24 divisors (see below), whose sum is σ = 2562510961920. Its totient is φ = 2088867198816.

The previous prime is 2321001001939. The next prime is 2321001002057. The reversal of 2321001002021 is 1202001001232.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2321001002021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2321001001987 and 2321001002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321001002071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42234800 + ... + 42289718.

It is an arithmetic number, because the mean of its divisors is an integer number (106771290080).

Almost surely, 2^{2321001002021} is an apocalyptic number.

It is an amenable number.

2321001002021 is a deficient number, since it is larger than the sum of its proper divisors (241509959899).

2321001002021 is an equidigital number, since it uses as much as digits as its factorization.

2321001002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55505 (or 55242 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2321001002021 its reverse (1202001001232), we get a palindrome (3523002003253).

The spelling of 2321001002021 in words is "two trillion, three hundred twenty-one billion, one million, two thousand, twenty-one".