321123302121 has 16 divisors (see below), whose sum is σ = 429059119680. Its totient is φ = 213635083200.

The previous prime is 321123302117. The next prime is 321123302131. The reversal of 321123302121 is 121203321123.

It is not a de Polignac number, because 321123302121 - 2² = 321123302117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321123302111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5695971 + ... + 5752071.

It is an arithmetic number, because the mean of its divisors is an integer number (26816194980).

Almost surely, 2^321123302121 is an apocalyptic number.

It is an amenable number.

321123302121 is a deficient number, since it is larger than the sum of its proper divisors (107935817559).

321123302121 is a wasteful number, since it uses less digits than its factorization.

321123302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60056.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 321123302121 its reverse (121203321123), we get a palindrome (442326623244).

The spelling of 321123302121 in words is "three hundred twenty-one billion, one hundred twenty-three million, three hundred two thousand, one hundred twenty-one".