1310221320123 has 8 divisors (see below), whose sum is σ = 1763922554368. Its totient is φ = 865000482984.

The previous prime is 1310221320091. The next prime is 1310221320241. The reversal of 1310221320123 is 3210231220131.

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

It is not a de Polignac number, because 1310221320123 - 2⁵ = 1310221320091 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 1310221320123.

It is not an unprimeable number, because it can be changed into a prime (1310221320823) 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, 2120098915 + ... + 2120099532.

It is an arithmetic number, because the mean of its divisors is an integer number (220490319296).

Almost surely, 2^{1310221320123} is an apocalyptic number.

1310221320123 is a deficient number, since it is larger than the sum of its proper divisors (453701234245).

1310221320123 is a wasteful number, since it uses less digits than its factorization.

1310221320123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240198553.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1310221320123 its reverse (3210231220131), we get a palindrome (4520452540254).

The spelling of 1310221320123 in words is "one trillion, three hundred ten billion, two hundred twenty-one million, three hundred twenty thousand, one hundred twenty-three".