2121120330312 has 64 divisors (see below), whose sum is σ = 5614887470400. Its totient is φ = 665430886400.

The previous prime is 2121120330191. The next prime is 2121120330361. The reversal of 2121120330312 is 2130330211212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25637812 + ... + 25720412.

It is an arithmetic number, because the mean of its divisors is an integer number (87732616725).

Almost surely, 2^{2121120330312} is an apocalyptic number.

It is an amenable number.

2121120330312 is an abundant number, since it is smaller than the sum of its proper divisors (3493767140088).

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

2121120330312 is a wasteful number, since it uses less digits than its factorization.

2121120330312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145566 (or 145562 counting only the distinct ones).

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

Adding to 2121120330312 its reverse (2130330211212), we get a palindrome (4251450541524).

The spelling of 2121120330312 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, three hundred thirty thousand, three hundred twelve".