321121212003 has 48 divisors (see below), whose sum is σ = 506119513536. Its totient is φ = 195395758080.

The previous prime is 321121212001. The next prime is 321121212019. The reversal of 321121212003 is 300212121123.

321121212003 is a `hidden beast` number, since 321 + 121 + 21 + 200 + 3 = 666.

It is not a de Polignac number, because 321121212003 - 2¹ = 321121212001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321121212001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 894325 + ... + 1200857.

It is an arithmetic number, because the mean of its divisors is an integer number (10544156532).

Almost surely, 2^321121212003 is an apocalyptic number.

321121212003 is a deficient number, since it is larger than the sum of its proper divisors (184998301533).

321121212003 is a wasteful number, since it uses less digits than its factorization.

321121212003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306764 (or 306761 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 321121212003 its reverse (300212121123), we get a palindrome (621333333126).

The spelling of 321121212003 in words is "three hundred twenty-one billion, one hundred twenty-one million, two hundred twelve thousand, three".