3121321120412 has 96 divisors (see below), whose sum is σ = 6021752405760. Its totient is φ = 1403918208000.

The previous prime is 3121321120339. The next prime is 3121321120429. The reversal of 3121321120412 is 2140211231213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1310927462 + ... + 1310929842.

It is an arithmetic number, because the mean of its divisors is an integer number (62726587560).

Almost surely, 2^{3121321120412} is an apocalyptic number.

It is an amenable number.

3121321120412 is a deficient number, since it is larger than the sum of its proper divisors (2900431285348).

3121321120412 is a wasteful number, since it uses less digits than its factorization.

3121321120412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 3121321120412 its reverse (2140211231213), we get a palindrome (5261532351625).

The spelling of 3121321120412 in words is "three trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred twenty thousand, four hundred twelve".