2002120001 has 4 divisors (see below), whose sum is σ = 2288137152. Its totient is φ = 1716102852.

The previous prime is 2002119967. The next prime is 2002120013. The reversal of 2002120001 is 1000212002.

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 2002120001 - 2¹⁸ = 2001857857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2002120051) 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, 143008565 + ... + 143008578.

It is an arithmetic number, because the mean of its divisors is an integer number (572034288).

Almost surely, 2^2002120001 is an apocalyptic number.

It is an amenable number.

2002120001 is a deficient number, since it is larger than the sum of its proper divisors (286017151).

2002120001 is an equidigital number, since it uses as much as digits as its factorization.

2002120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286017150.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2002120001 is about 44745.0556039435. The cubic root of 2002120001 is about 1260.3660650074.

Adding to 2002120001 its reverse (1000212002), we get a palindrome (3002332003).

The spelling of 2002120001 in words is "two billion, two million, one hundred twenty thousand, one".