13203121123105 has 8 divisors (see below), whose sum is σ = 15846954562152. Its totient is φ = 10560357422208.

The previous prime is 13203121123099. The next prime is 13203121123111. The reversal of 13203121123105 is 50132112130231.

It is an interprime number because it is at equal distance from previous prime (13203121123099) and next prime (13203121123111).

It can be written as a sum of positive squares in 4 ways, for example, as 2041595176336 + 11161525946769 = 1428844^2 + 3340887^2 .

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 13203121123105 - 2⁷ = 13203121122977 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 13203121123105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267407382 + ... + 267456751.

It is an arithmetic number, because the mean of its divisors is an integer number (1980869320269).

Almost surely, 2^{13203121123105} is an apocalyptic number.

It is an amenable number.

13203121123105 is a deficient number, since it is larger than the sum of its proper divisors (2643833439047).

13203121123105 is an equidigital number, since it uses as much as digits as its factorization.

13203121123105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534869075.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 13203121123105 its reverse (50132112130231), we get a palindrome (63335233253336).

The spelling of 13203121123105 in words is "thirteen trillion, two hundred three billion, one hundred twenty-one million, one hundred twenty-three thousand, one hundred five".