1321200002 has 8 divisors (see below), whose sum is σ = 1981959312. Its totient is φ = 660546900.

The previous prime is 1321199977. The next prime is 1321200047. The reversal of 1321200002 is 2000021231.

It is a happy number.

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, 23177 + ... + 56387.

It is an arithmetic number, because the mean of its divisors is an integer number (247744914).

Almost surely, 2^1321200002 is an apocalyptic number.

1321200002 is a deficient number, since it is larger than the sum of its proper divisors (660759310).

1321200002 is a wasteful number, since it uses less digits than its factorization.

1321200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53104.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1321200002 is about 36348.3149815779. The cubic root of 1321200002 is about 1097.2936228783.

Adding to 1321200002 its reverse (2000021231), we get a palindrome (3321221233).

The spelling of 1321200002 in words is "one billion, three hundred twenty-one million, two hundred thousand, two".