321212002 has 4 divisors (see below), whose sum is σ = 481818006. Its totient is φ = 160606000.

The previous prime is 321211993. The next prime is 321212039. The reversal of 321212002 is 200212123.

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., 177715561 + 143496441 = 13331^2 + 11979^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80302999 + ... + 80303002.

Almost surely, 2^321212002 is an apocalyptic number.

321212002 is a deficient number, since it is larger than the sum of its proper divisors (160606004).

321212002 is a wasteful number, since it uses less digits than its factorization.

321212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160606003.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 321212002 is about 17922.3882895110. The cubic root of 321212002 is about 684.8528300168.

Adding to 321212002 its reverse (200212123), we get a palindrome (521424125).

The spelling of 321212002 in words is "three hundred twenty-one million, two hundred twelve thousand, two".