1001002001002 has 8 divisors (see below), whose sum is σ = 1505069518212. Its totient is φ = 499312161600.

The previous prime is 1001002000993. The next prime is 1001002001039. The reversal of 1001002001002 is 2001002001001.

It can be written as a sum of positive squares in 2 ways, for example, as 861089346601 + 139912654401 = 927949^2 + 374049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594418399 + ... + 594420082.

Almost surely, 2^{1001002001002} is an apocalyptic number.

1001002001002 is a deficient number, since it is larger than the sum of its proper divisors (504067517210).

1001002001002 is a wasteful number, since it uses less digits than its factorization.

1001002001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188838904.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 1001002001002 its reverse (2001002001001), we get a palindrome (3002004002003).

Subtracting 1001002001002 from its reverse (2001002001001), we obtain a palindrome (999999999999).

The spelling of 1001002001002 in words is "one trillion, one billion, two million, one thousand, two".