2001002001002 has 4 divisors (see below), whose sum is σ = 3001503001506. Its totient is φ = 1000501000500.

The previous prime is 2001002001001. The next prime is 2001002001017.

2001002001002 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in only one way, i.e., 1638551043481 + 362450957521 = 1280059^2 + 602039^2 .

It is not an unprimeable number, because it can be changed into a prime (2001002001001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500250500249 + ... + 500250500252.

Almost surely, 2^{2001002001002} is an apocalyptic number.

2001002001002 is a deficient number, since it is larger than the sum of its proper divisors (1000501000504).

2001002001002 is a wasteful number, since it uses less digits than its factorization.

2001002001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000501000503.

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

The spelling of 2001002001002 in words is "two trillion, one billion, two million, one thousand, two".