331121333010221 has 8 divisors (see below), whose sum is σ = 356597802875160. Its totient is φ = 305645662873152.

The previous prime is 331121333010211. The next prime is 331121333010337. The reversal of 331121333010221 is 122010333121133.

It can be written as a sum of positive squares in 4 ways, for example, as 1386070609225 + 329735262400996 = 1177315^2 + 18158614^2 .

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 331121333010221 - 2³⁰ = 331120259268397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331121333010211) 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, 199071890 + ... + 200728323.

It is an arithmetic number, because the mean of its divisors is an integer number (44574725359395).

Almost surely, 2^{331121333010221} is an apocalyptic number.

It is an amenable number.

331121333010221 is a deficient number, since it is larger than the sum of its proper divisors (25476469864939).

331121333010221 is a wasteful number, since it uses less digits than its factorization.

331121333010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399863935.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 331121333010221 its reverse (122010333121133), we get a palindrome (453131666131354).

The spelling of 331121333010221 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, three hundred thirty-three million, ten thousand, two hundred twenty-one".