2001233100001 has 4 divisors (see below), whose sum is σ = 2001236640004. Its totient is φ = 2001229560000.

The previous prime is 2001233099959. The next prime is 2001233100037. The reversal of 2001233100001 is 1000013321002.

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 1294591115601 + 706641984400 = 1137801^2 + 840620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001233100001 - 2²³ = 2001224711393 is a prime.

It is a super-2 number, since 2×2001233100001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001233100701) 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, 710700 + ... + 2123101.

It is an arithmetic number, because the mean of its divisors is an integer number (500309160001).

Almost surely, 2^{2001233100001} is an apocalyptic number.

It is an amenable number.

2001233100001 is a deficient number, since it is larger than the sum of its proper divisors (3540003).

2001233100001 is an equidigital number, since it uses as much as digits as its factorization.

2001233100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540002.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 2001233100001 its reverse (1000013321002), we get a palindrome (3001246421003).

The spelling of 2001233100001 in words is "two trillion, one billion, two hundred thirty-three million, one hundred thousand, one".