331320211121 has 8 divisors (see below), whose sum is σ = 333508257000. Its totient is φ = 329138611200.

The previous prime is 331320211073. The next prime is 331320211139. The reversal of 331320211121 is 121112023133.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 214244008225 + 117076202896 = 462865^2 + 342164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331320211121 - 2¹⁰ = 331320210097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331320211093 and 331320211102.

It is not an unprimeable number, because it can be changed into a prime (331320211181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1508330 + ... + 1713971.

It is an arithmetic number, because the mean of its divisors is an integer number (41688532125).

Almost surely, 2^331320211121 is an apocalyptic number.

It is an amenable number.

331320211121 is a deficient number, since it is larger than the sum of its proper divisors (2188045879).

331320211121 is a wasteful number, since it uses less digits than its factorization.

331320211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222979.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 331320211121 its reverse (121112023133), we get a palindrome (452432234254).

The spelling of 331320211121 in words is "three hundred thirty-one billion, three hundred twenty million, two hundred eleven thousand, one hundred twenty-one".