2001142045321 has 8 divisors (see below), whose sum is σ = 2012367408480. Its totient is φ = 1989917191392.

The previous prime is 2001142045283. The next prime is 2001142045339. The reversal of 2001142045321 is 1235402411002.

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 2001142045321 - 2¹⁷ = 2001141914249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001142045381) 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, 10009686 + ... + 10207648.

It is an arithmetic number, because the mean of its divisors is an integer number (251545926060).

Almost surely, 2^{2001142045321} is an apocalyptic number.

It is an amenable number.

2001142045321 is a deficient number, since it is larger than the sum of its proper divisors (11225363159).

2001142045321 is a wasteful number, since it uses less digits than its factorization.

2001142045321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254615.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 2001142045321 its reverse (1235402411002), we get a palindrome (3236544456323).

The spelling of 2001142045321 in words is "two trillion, one billion, one hundred forty-two million, forty-five thousand, three hundred twenty-one".