1200021002 has 8 divisors (see below), whose sum is σ = 1800243012. Its totient is φ = 599940000.

The previous prime is 1200020999. The next prime is 1200021013. The reversal of 1200021002 is 2001200021.

It can be written as a sum of positive squares in 2 ways, for example, as 831803281 + 368217721 = 28841^2 + 19189^2 .

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, 10499 + ... + 50102.

Almost surely, 2^1200021002 is an apocalyptic number.

1200021002 is a deficient number, since it is larger than the sum of its proper divisors (600222010).

1200021002 is an equidigital number, since it uses as much as digits as its factorization.

1200021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70504.

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

The square root of 1200021002 is about 34641.3192878100. The cubic root of 1200021002 is about 1062.6647685785.

Adding to 1200021002 its reverse (2001200021), we get a palindrome (3201221023).

The spelling of 1200021002 in words is "one billion, two hundred million, twenty-one thousand, two".