3123112213321 has 8 divisors (see below), whose sum is σ = 3124261391400. Its totient is φ = 3121963253760.

The previous prime is 3123112213307. The next prime is 3123112213369. The reversal of 3123112213321 is 1233122113213.

It can be written as a sum of positive squares in 4 ways, for example, as 282876123321 + 2840236090000 = 531861^2 + 1685300^2 .

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 3123112213321 - 2⁹ = 3123112212809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123112213621) 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, 31871361 + ... + 31969201.

It is an arithmetic number, because the mean of its divisors is an integer number (390532673925).

Almost surely, 2^{3123112213321} is an apocalyptic number.

It is an amenable number.

3123112213321 is a deficient number, since it is larger than the sum of its proper divisors (1149178079).

3123112213321 is an equidigital number, since it uses as much as digits as its factorization.

3123112213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109259.

The product of its digits is 1296, while the sum is 25.

Adding to 3123112213321 its reverse (1233122113213), we get a palindrome (4356234326534).

The spelling of 3123112213321 in words is "three trillion, one hundred twenty-three billion, one hundred twelve million, two hundred thirteen thousand, three hundred twenty-one".