331121213133332 has 12 divisors (see below), whose sum is σ = 579471613921620. Its totient is φ = 165557894870016.

The previous prime is 331121213133331. The next prime is 331121213133409. The reversal of 331121213133332 is 233331312121133.

It can be written as a sum of positive squares in 2 ways, for example, as 285103360080016 + 46017853053316 = 16885004^2 + 6783646^2 .

It is a super-2 number, since 2×331121213133332² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331121213133331) 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, 677649407 + ... + 678137862.

It is an arithmetic number, because the mean of its divisors is an integer number (48289301160135).

Almost surely, 2^{331121213133332} is an apocalyptic number.

It is an amenable number.

331121213133332 is a deficient number, since it is larger than the sum of its proper divisors (248350400788288).

331121213133332 is a wasteful number, since it uses less digits than its factorization.

331121213133332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355848330 (or 1355848328 counting only the distinct ones).

The product of its digits is 17496, while the sum is 32.

Adding to 331121213133332 its reverse (233331312121133), we get a palindrome (564452525254465).

The spelling of 331121213133332 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, two hundred thirteen million, one hundred thirty-three thousand, three hundred thirty-two".