331132013201221 has 8 divisors (see below), whose sum is σ = 345541990823424. Its totient is φ = 316723113376560.

The previous prime is 331132013201173. The next prime is 331132013201273. The reversal of 331132013201221 is 122102310231133.

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 331132013201221 - 2⁴¹ = 328932989945669 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 (331132013201621) 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, 268821525 + ... + 270050506.

It is an arithmetic number, because the mean of its divisors is an integer number (43192748852928).

Almost surely, 2^{331132013201221} is an apocalyptic number.

It is an amenable number.

331132013201221 is a deficient number, since it is larger than the sum of its proper divisors (14409977622203).

331132013201221 is a wasteful number, since it uses less digits than its factorization.

331132013201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538898771.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 331132013201221 its reverse (122102310231133), we get a palindrome (453234323432354).

The spelling of 331132013201221 in words is "three hundred thirty-one trillion, one hundred thirty-two billion, thirteen million, two hundred one thousand, two hundred twenty-one".