321020221103 has 4 divisors (see below), whose sum is σ = 322459773888. Its totient is φ = 319580668320.

The previous prime is 321020221097. The next prime is 321020221117. The reversal of 321020221103 is 301122020123.

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 321020221103 - 2²⁰ = 321019172527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321020221303) 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, 719776058 + ... + 719776503.

It is an arithmetic number, because the mean of its divisors is an integer number (80614943472).

Almost surely, 2^321020221103 is an apocalyptic number.

321020221103 is a deficient number, since it is larger than the sum of its proper divisors (1439552785).

321020221103 is a wasteful number, since it uses less digits than its factorization.

321020221103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439552784.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 321020221103 its reverse (301122020123), we get a palindrome (622142241226).

The spelling of 321020221103 in words is "three hundred twenty-one billion, twenty million, two hundred twenty-one thousand, one hundred three".