3120010013321 has 4 divisors (see below), whose sum is σ = 3120014055444. Its totient is φ = 3120005971200.

The previous prime is 3120010013317. The next prime is 3120010013353. The reversal of 3120010013321 is 1233100100213.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 204248859721 + 2915761153600 = 451939^2 + 1707560^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120010013321 - 2² = 3120010013317 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 3120010013321.

It is not an unprimeable number, because it can be changed into a prime (3120010003321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462740 + ... + 2540501.

It is an arithmetic number, because the mean of its divisors is an integer number (780003513861).

Almost surely, 2^{3120010013321} is an apocalyptic number.

It is an amenable number.

3120010013321 is a deficient number, since it is larger than the sum of its proper divisors (4042123).

3120010013321 is a wasteful number, since it uses less digits than its factorization.

3120010013321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042122.

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

Adding to 3120010013321 its reverse (1233100100213), we get a palindrome (4353110113534).

The spelling of 3120010013321 in words is "three trillion, one hundred twenty billion, ten million, thirteen thousand, three hundred twenty-one".