2001143220341 has 4 divisors (see below), whose sum is σ = 2001382800492. Its totient is φ = 2000903640192.

The previous prime is 2001143220313. The next prime is 2001143220367. The reversal of 2001143220341 is 1430223411002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1229681388100 + 771461832241 = 1108910^2 + 878329^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001143220341 - 2²² = 2001139026037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001143220301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119777546 + ... + 119794251.

It is an arithmetic number, because the mean of its divisors is an integer number (500345700123).

Almost surely, 2^{2001143220341} is an apocalyptic number.

It is an amenable number.

2001143220341 is a deficient number, since it is larger than the sum of its proper divisors (239580151).

2001143220341 is an equidigital number, since it uses as much as digits as its factorization.

2001143220341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239580150.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2001143220341 its reverse (1430223411002), we get a palindrome (3431366631343).

The spelling of 2001143220341 in words is "two trillion, one billion, one hundred forty-three million, two hundred twenty thousand, three hundred forty-one".