331220012033 has 4 divisors (see below), whose sum is σ = 331244046420. Its totient is φ = 331195977648.

The previous prime is 331220012021. The next prime is 331220012051. The reversal of 331220012033 is 330210022133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 288274495744 + 42945516289 = 536912^2 + 207233^2 .

It is a cyclic number.

It is not a de Polignac number, because 331220012033 - 2¹⁴ = 331219995649 is a prime.

It is a super-2 number, since 2×331220012033² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331220011996 and 331220012014.

It is not an unprimeable number, because it can be changed into a prime (331220017033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11996510 + ... + 12024087.

It is an arithmetic number, because the mean of its divisors is an integer number (82811011605).

Almost surely, 2^331220012033 is an apocalyptic number.

It is an amenable number.

331220012033 is a deficient number, since it is larger than the sum of its proper divisors (24034387).

331220012033 is a wasteful number, since it uses less digits than its factorization.

331220012033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24034386.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 331220012033 its reverse (330210022133), we get a palindrome (661430034166).

It can be divided in two parts, 3312200 and 12033, that added together give a palindrome (3324233).

The spelling of 331220012033 in words is "three hundred thirty-one billion, two hundred twenty million, twelve thousand, thirty-three".