331121201201321 has 4 divisors (see below), whose sum is σ = 331215510860544. Its totient is φ = 331026891542100.

The previous prime is 331121201201317. The next prime is 331121201201347. The reversal of 331121201201321 is 123102102121133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331121201201321 - 2² = 331121201201317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331121201201381) 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, 47154824345 + ... + 47154831366.

It is an arithmetic number, because the mean of its divisors is an integer number (82803877715136).

Almost surely, 2^{331121201201321} is an apocalyptic number.

It is an amenable number.

331121201201321 is a deficient number, since it is larger than the sum of its proper divisors (94309659223).

331121201201321 is an equidigital number, since it uses as much as digits as its factorization.

331121201201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94309659222.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 331121201201321 its reverse (123102102121133), we get a palindrome (454223303322454).

The spelling of 331121201201321 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, two hundred one million, two hundred one thousand, three hundred twenty-one".