102003321 has 16 divisors (see below), whose sum is σ = 162192384. Its totient is φ = 55753104.

The previous prime is 102003289. The next prime is 102003331. The reversal of 102003321 is 123300201.

102003321 = T₅₃₉₅ + T₅₃₉₆ + ... + T₅₄₀₁.

It is a happy number.

It is not a de Polignac number, because 102003321 - 2⁵ = 102003289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102003297 and 102003306.

It is not an unprimeable number, because it can be changed into a prime (102003331) 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 15 ways as a sum of consecutive naturals, for example, 105111 + ... + 106076.

It is an arithmetic number, because the mean of its divisors is an integer number (10137024).

Almost surely, 2^102003321 is an apocalyptic number.

It is an amenable number.

102003321 is a deficient number, since it is larger than the sum of its proper divisors (60189063).

102003321 is a wasteful number, since it uses less digits than its factorization.

102003321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211220.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 102003321 is about 10099.6693510233. The cubic root of 102003321 is about 467.2379436314.

Adding to 102003321 its reverse (123300201), we get a palindrome (225303522).

The spelling of 102003321 in words is "one hundred two million, three thousand, three hundred twenty-one".