1310231221021 has 8 divisors (see below), whose sum is σ = 1367379134784. Its totient is φ = 1253098418880.

The previous prime is 1310231221003. The next prime is 1310231221027. The reversal of 1310231221021 is 1201221320131.

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 1310231221021 - 2¹¹ = 1310231218973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1310231221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310231221027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3600540 + ... + 3947701.

It is an arithmetic number, because the mean of its divisors is an integer number (170922391848).

Almost surely, 2^{1310231221021} is an apocalyptic number.

It is an amenable number.

1310231221021 is a deficient number, since it is larger than the sum of its proper divisors (57147913763).

1310231221021 is an equidigital number, since it uses as much as digits as its factorization.

1310231221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555811.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1310231221021 its reverse (1201221320131), we get a palindrome (2511452541152).

The spelling of 1310231221021 in words is "one trillion, three hundred ten billion, two hundred thirty-one million, two hundred twenty-one thousand, twenty-one".