3121223130012 has 48 divisors (see below), whose sum is σ = 7845025610912. Its totient is φ = 960137314560.

The previous prime is 3121223129993. The next prime is 3121223130019. The reversal of 3121223130012 is 2100313221213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121223130019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1860643 + ... + 3115194.

Almost surely, 2^{3121223130012} is an apocalyptic number.

It is an amenable number.

3121223130012 is an abundant number, since it is smaller than the sum of its proper divisors (4723802480900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121223130012 is a wasteful number, since it uses less digits than its factorization.

3121223130012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4979878 (or 4979876 counting only the distinct ones).

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

Adding to 3121223130012 its reverse (2100313221213), we get a palindrome (5221536351225).

The spelling of 3121223130012 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-three million, one hundred thirty thousand, twelve".