1002003002002 has 16 divisors (see below), whose sum is σ = 1518042072024. Its totient is φ = 495990000000.

The previous prime is 1002003001949. The next prime is 1002003002027. The reversal of 1002003002002 is 2002003002001.

It is a Cunningham number, because it is equal to 1001001²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 962712230041 + 39290771961 = 981179^2 + 198219^2 .

It is a super-4 number, since 4×1002003002002⁴ (a number of 49 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1002003002002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1749502 + ... + 2250502.

Almost surely, 2^{1002003002002} is an apocalyptic number.

1002003002002 is a deficient number, since it is larger than the sum of its proper divisors (516039070022).

1002003002002 is a wasteful number, since it uses less digits than its factorization.

1002003002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511005.

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 1002003002002 its reverse (2002003002001), we get a palindrome (3004006004003).

Subtracting 1002003002002 from its reverse (2002003002001), we obtain a palindrome (999999999999).

The spelling of 1002003002002 in words is "one trillion, two billion, three million, two thousand, two".