1310021233121 has 8 divisors (see below), whose sum is σ = 1334893547304. Its totient is φ = 1285154657280.

The previous prime is 1310021233109. The next prime is 1310021233123. The reversal of 1310021233121 is 1213321200131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 64877693521 + 1245143539600 = 254711^2 + 1115860^2 .

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 1310021233121 - 2⁶ = 1310021233057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310021233093 and 1310021233102.

It is not an unprimeable number, because it can be changed into a prime (1310021233123) 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, 972266 + ... + 1888211.

It is an arithmetic number, because the mean of its divisors is an integer number (166861693413).

Almost surely, 2^{1310021233121} is an apocalyptic number.

It is an amenable number.

1310021233121 is a deficient number, since it is larger than the sum of its proper divisors (24872314183).

1310021233121 is an equidigital number, since it uses as much as digits as its factorization.

1310021233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869171.

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

Adding to 1310021233121 its reverse (1213321200131), we get a palindrome (2523342433252).

The spelling of 1310021233121 in words is "one trillion, three hundred ten billion, twenty-one million, two hundred thirty-three thousand, one hundred twenty-one".