321220230101203 has 4 divisors (see below), whose sum is σ = 321879819896560. Its totient is φ = 320560640305848.

The previous prime is 321220230101171. The next prime is 321220230101207. The reversal of 321220230101203 is 302101032022123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321220230101203 - 2⁵ = 321220230101171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321220230101207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329794896948 + ... + 329794897921.

It is an arithmetic number, because the mean of its divisors is an integer number (80469954974140).

Almost surely, 2^{321220230101203} is an apocalyptic number.

321220230101203 is a deficient number, since it is larger than the sum of its proper divisors (659589795357).

321220230101203 is an equidigital number, since it uses as much as digits as its factorization.

321220230101203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659589795356.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 321220230101203 its reverse (302101032022123), we get a palindrome (623321262123326).

The spelling of 321220230101203 in words is "three hundred twenty-one trillion, two hundred twenty billion, two hundred thirty million, one hundred one thousand, two hundred three".