331201233121 has 4 divisors (see below), whose sum is σ = 361310436144. Its totient is φ = 301092030100.

The previous prime is 331201233119. The next prime is 331201233173. The reversal of 331201233121 is 121332102133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121332102133 = 11 ⋅11030191103.

It is a cyclic number.

It is not a de Polignac number, because 331201233121 - 2¹ = 331201233119 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331201233092 and 331201233101.

It is not an unprimeable number, because it can be changed into a prime (331201233221) 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, 15054601495 + ... + 15054601516.

It is an arithmetic number, because the mean of its divisors is an integer number (90327609036).

Almost surely, 2^331201233121 is an apocalyptic number.

It is an amenable number.

331201233121 is a deficient number, since it is larger than the sum of its proper divisors (30109203023).

331201233121 is a wasteful number, since it uses less digits than its factorization.

331201233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30109203022.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 331201233121 its reverse (121332102133), we get a palindrome (452533335254).

The spelling of 331201233121 in words is "three hundred thirty-one billion, two hundred one million, two hundred thirty-three thousand, one hundred twenty-one".