12120505455310 has 24 divisors (see below), whose sum is σ = 25378854280920. Its totient is φ = 4155601870224.

The previous prime is 12120505455293. The next prime is 12120505455379. The reversal of 12120505455310 is 1355450502121.

It is a super-3 number, since 3×12120505455310³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12367862220 + ... + 12367863199.

It is an arithmetic number, because the mean of its divisors is an integer number (1057452261705).

Almost surely, 2^{12120505455310} is an apocalyptic number.

12120505455310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12120505455310 is an abundant number, since it is smaller than the sum of its proper divisors (13258348825610).

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

12120505455310 is a wasteful number, since it uses less digits than its factorization.

12120505455310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24735725440 (or 24735725433 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 12120505455310 its reverse (1355450502121), we get a palindrome (13475955957431).

The spelling of 12120505455310 in words is "twelve trillion, one hundred twenty billion, five hundred five million, four hundred fifty-five thousand, three hundred ten".