321121303311 has 4 divisors (see below), whose sum is σ = 428161737752. Its totient is φ = 214080868872.

The previous prime is 321121303301. The next prime is 321121303333. The reversal of 321121303311 is 113303121123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113303121123 = 3 ⋅37767707041.

It is not a de Polignac number, because 321121303311 - 2¹³ = 321121295119 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 (321121303301) 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, 53520217216 + ... + 53520217221.

It is an arithmetic number, because the mean of its divisors is an integer number (107040434438).

Almost surely, 2^321121303311 is an apocalyptic number.

321121303311 is a deficient number, since it is larger than the sum of its proper divisors (107040434441).

321121303311 is a wasteful number, since it uses less digits than its factorization.

321121303311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107040434440.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 321121303311 its reverse (113303121123), we get a palindrome (434424424434).

The spelling of 321121303311 in words is "three hundred twenty-one billion, one hundred twenty-one million, three hundred three thousand, three hundred eleven".