1000221002002 has 4 divisors (see below), whose sum is σ = 1500331503006. Its totient is φ = 500110501000.

The previous prime is 1000221001987. The next prime is 1000221002041. The reversal of 1000221002002 is 2002001220001.

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., 709181252641 + 291039749361 = 842129^2 + 539481^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1000221002002.

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, 250055250499 + ... + 250055250502.

Almost surely, 2^{1000221002002} is an apocalyptic number.

1000221002002 is a deficient number, since it is larger than the sum of its proper divisors (500110501004).

1000221002002 is an equidigital number, since it uses as much as digits as its factorization.

1000221002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500110501003.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1000221002002 its reverse (2002001220001), we get a palindrome (3002222222003).

The spelling of 1000221002002 in words is "one trillion, two hundred twenty-one million, two thousand, two".