1321130023121 has 8 divisors (see below), whose sum is σ = 1322384313600. Its totient is φ = 1319876238240.

The previous prime is 1321130023093. The next prime is 1321130023127. The reversal of 1321130023121 is 1213200311231.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321130023121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321130023093 and 1321130023102.

It is not an unprimeable number, because it can be changed into a prime (1321130023127) 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, 5208440 + ... + 5456198.

It is an arithmetic number, because the mean of its divisors is an integer number (165298039200).

Almost surely, 2^{1321130023121} is an apocalyptic number.

It is an amenable number.

1321130023121 is a deficient number, since it is larger than the sum of its proper divisors (1254290479).

1321130023121 is a wasteful number, since it uses less digits than its factorization.

1321130023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252799.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1321130023121 its reverse (1213200311231), we get a palindrome (2534330334352).

The spelling of 1321130023121 in words is "one trillion, three hundred twenty-one billion, one hundred thirty million, twenty-three thousand, one hundred twenty-one".