2001231010321 has 8 divisors (see below), whose sum is σ = 2111704439040. Its totient is φ = 1892712863712.

The previous prime is 2001231010301. The next prime is 2001231010381. The reversal of 2001231010321 is 1230101321002.

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 2001231010321 - 2¹³ = 2001231002129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001231010295 and 2001231010304.

It is not an unprimeable number, because it can be changed into a prime (2001231010301) 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, 488818425 + ... + 488822518.

It is an arithmetic number, because the mean of its divisors is an integer number (263963054880).

Almost surely, 2^{2001231010321} is an apocalyptic number.

It is an amenable number.

2001231010321 is a deficient number, since it is larger than the sum of its proper divisors (110473428719).

2001231010321 is an equidigital number, since it uses as much as digits as its factorization.

2001231010321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977641055.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2001231010321 its reverse (1230101321002), we get a palindrome (3231332331323).

The spelling of 2001231010321 in words is "two trillion, one billion, two hundred thirty-one million, ten thousand, three hundred twenty-one".