1331032320121 has 8 divisors (see below), whose sum is σ = 1525324701440. Its totient is φ = 1137776165568.

The previous prime is 1331032320049. The next prime is 1331032320139. The reversal of 1331032320121 is 1210232301331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1331032320121 - 2²¹ = 1331030222969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331032320092 and 1331032320101.

It is not an unprimeable number, because it can be changed into a prime (1331032320721) 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, 259053936 + ... + 259059073.

It is an arithmetic number, because the mean of its divisors is an integer number (190665587680).

Almost surely, 2^{1331032320121} is an apocalyptic number.

It is an amenable number.

1331032320121 is a deficient number, since it is larger than the sum of its proper divisors (194292381319).

1331032320121 is an equidigital number, since it uses as much as digits as its factorization.

1331032320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518113383.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1331032320121 its reverse (1210232301331), we get a palindrome (2541264621452).

The spelling of 1331032320121 in words is "one trillion, three hundred thirty-one billion, thirty-two million, three hundred twenty thousand, one hundred twenty-one".