2001202012001 has 4 divisors (see below), whose sum is σ = 2029387955904. Its totient is φ = 1973016068100.

The previous prime is 2001202011989. The next prime is 2001202012009. The reversal of 2001202012001 is 1002102021002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2001202012001 - 2³⁰ = 2000128270177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001202012009) 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, 14092971845 + ... + 14092971986.

It is an arithmetic number, because the mean of its divisors is an integer number (507346988976).

Almost surely, 2^{2001202012001} is an apocalyptic number.

It is an amenable number.

2001202012001 is a deficient number, since it is larger than the sum of its proper divisors (28185943903).

2001202012001 is an equidigital number, since it uses as much as digits as its factorization.

2001202012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28185943902.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2001202012001 its reverse (1002102021002), we get a palindrome (3003304033003).

Subtracting from 2001202012001 its reverse (1002102021002), we obtain a palindrome (999099990999).

The spelling of 2001202012001 in words is "two trillion, one billion, two hundred two million, twelve thousand, one".