1001000010002 has 4 divisors (see below), whose sum is σ = 1501500015006. Its totient is φ = 500500005000.

The previous prime is 1001000010001. The next prime is 1001000010053. The reversal of 1001000010002 is 2000100001001.

It is a happy number.

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., 1000338028561 + 661981441 = 1000169^2 + 25729^2 .

It is not an unprimeable number, because it can be changed into a prime (1001000010001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250250002499 + ... + 250250002502.

Almost surely, 2^{1001000010002} is an apocalyptic number.

1001000010002 is a deficient number, since it is larger than the sum of its proper divisors (500500005004).

1001000010002 is an equidigital number, since it uses as much as digits as its factorization.

1001000010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500500005003.

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 1001000010002 its reverse (2000100001001), we get a palindrome (3001100011003).

Subtracting 1001000010002 from its reverse (2000100001001), we obtain a palindrome (999099990999).

The spelling of 1001000010002 in words is "one trillion, one billion, ten thousand, two".