20001003002 has 4 divisors (see below), whose sum is σ = 30001504506. Its totient is φ = 10000501500.

The previous prime is 20001002977. The next prime is 20001003017. The reversal of 20001003002 is 20030010002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20030010002 = 2 ⋅10015005001.

It can be written as a sum of positive squares in only one way, i.e., 19351313881 + 649689121 = 139109^2 + 25489^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000250749 + ... + 5000250752.

Almost surely, 2^20001003002 is an apocalyptic number.

20001003002 is a deficient number, since it is larger than the sum of its proper divisors (10000501504).

20001003002 is a wasteful number, since it uses less digits than its factorization.

20001003002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000501503.

The product of its (nonzero) digits is 12, while the sum is 8.

Adding to 20001003002 its reverse (20030010002), we get a palindrome (40031013004).

The spelling of 20001003002 in words is "twenty billion, one million, three thousand, two".