12000030311220 has 144 divisors (see below), whose sum is σ = 39174047091648. Its totient is φ = 2736672207360.

The previous prime is 12000030311209. The next prime is 12000030311233. The reversal of 12000030311220 is 2211303000021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12000030311220.

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 47 ways as a sum of consecutive naturals, for example, 3304401 + ... + 5909240.

It is an arithmetic number, because the mean of its divisors is an integer number (272041993692).

Almost surely, 2^{12000030311220} is an apocalyptic number.

12000030311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12000030311220 is an abundant number, since it is smaller than the sum of its proper divisors (27174016780428).

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

12000030311220 is a wasteful number, since it uses less digits than its factorization.

12000030311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9214110 (or 9214101 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12000030311220 its reverse (2211303000021), we get a palindrome (14211333311241).

The spelling of 12000030311220 in words is "twelve trillion, thirty million, three hundred eleven thousand, two hundred twenty".