331220121234233 has 48 divisors (see below), whose sum is σ = 435212741311488. Its totient is φ = 244427848104000.

The previous prime is 331220121234209. The next prime is 331220121234253. The reversal of 331220121234233 is 332432121022133.

It is not a de Polignac number, because 331220121234233 - 2¹⁴ = 331220121217849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331220121234233.

It is not an unprimeable number, because it can be changed into a prime (331220121234253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8899010 + ... + 27232932.

It is an arithmetic number, because the mean of its divisors is an integer number (9066932110656).

Almost surely, 2^{331220121234233} is an apocalyptic number.

It is an amenable number.

331220121234233 is a deficient number, since it is larger than the sum of its proper divisors (103992620077255).

331220121234233 is a wasteful number, since it uses less digits than its factorization.

331220121234233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18334166 (or 18334065 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 331220121234233 its reverse (332432121022133), we get a palindrome (663652242256366).

The spelling of 331220121234233 in words is "three hundred thirty-one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred thirty-four thousand, two hundred thirty-three".