1323113000021 has 8 divisors (see below), whose sum is σ = 1355405213400. Its totient is φ = 1290821794560.

The previous prime is 1323112999987. The next prime is 1323113000029. The reversal of 1323113000021 is 1200003113231.

It can be written as a sum of positive squares in 4 ways, for example, as 128136077521 + 1194976922500 = 357961^2 + 1093150^2 .

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 1323113000021 - 2³⁴ = 1305933130837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323113000029) 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, 2872535 + ... + 3301163.

It is an arithmetic number, because the mean of its divisors is an integer number (169425651675).

Almost surely, 2^{1323113000021} is an apocalyptic number.

It is an amenable number.

1323113000021 is a deficient number, since it is larger than the sum of its proper divisors (32292213379).

1323113000021 is an equidigital number, since it uses as much as digits as its factorization.

1323113000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503959.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1323113000021 its reverse (1200003113231), we get a palindrome (2523116113252).

The spelling of 1323113000021 in words is "one trillion, three hundred twenty-three billion, one hundred thirteen million, twenty-one", and thus it is an aban number.