321100002 has 12 divisors (see below), whose sum is σ = 695716710. Its totient is φ = 107033328.

The previous prime is 321100001. The next prime is 321100027. The reversal of 321100002 is 200001123.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 320016321 + 1083681 = 17889^2 + 1041^2 .

It is a super-2 number, since 2×321100002² = 206210422568800008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (321100001) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 8919427 + ... + 8919462.

Almost surely, 2^321100002 is an apocalyptic number.

321100002 is an abundant number, since it is smaller than the sum of its proper divisors (374616708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321100002 is a wasteful number, since it uses less digits than its factorization.

321100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17838897 (or 17838894 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 321100002 is about 17919.2634335232. The cubic root of 321100002 is about 684.7732227448.

Adding to 321100002 its reverse (200001123), we get a palindrome (521101125).

The spelling of 321100002 in words is "three hundred twenty-one million, one hundred thousand, two".