1321113023121 has 8 divisors (see below), whose sum is σ = 1761489349344. Its totient is φ = 880739356160.

The previous prime is 1321113023077. The next prime is 1321113023147. The reversal of 1321113023121 is 1213203111231.

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 1321113023121 - 2⁶ = 1321113023057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321113025121) 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, 1521745 + ... + 2226641.

It is an arithmetic number, because the mean of its divisors is an integer number (220186168668).

Almost surely, 2^{1321113023121} is an apocalyptic number.

It is an amenable number.

1321113023121 is a deficient number, since it is larger than the sum of its proper divisors (440376326223).

1321113023121 is an equidigital number, since it uses as much as digits as its factorization.

1321113023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329631.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1321113023121 its reverse (1213203111231), we get a palindrome (2534316134352).

The spelling of 1321113023121 in words is "one trillion, three hundred twenty-one billion, one hundred thirteen million, twenty-three thousand, one hundred twenty-one".