2001201443 has 4 divisors (see below), whose sum is σ = 2001434208. Its totient is φ = 2000968680.

The previous prime is 2001201439. The next prime is 2001201473. The reversal of 2001201443 is 3441021002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001201443 - 2² = 2001201439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001201413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102971 + ... + 120852.

It is an arithmetic number, because the mean of its divisors is an integer number (500358552).

Almost surely, 2^2001201443 is an apocalyptic number.

2001201443 is a deficient number, since it is larger than the sum of its proper divisors (232765).

2001201443 is an equidigital number, since it uses as much as digits as its factorization.

2001201443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232764.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2001201443 is about 44734.7900743929. The cubic root of 2001201443 is about 1260.1732866146.

Adding to 2001201443 its reverse (3441021002), we get a palindrome (5442222445).

The spelling of 2001201443 in words is "two billion, one million, two hundred one thousand, four hundred forty-three".