12015021200004 has 72 divisors (see below), whose sum is σ = 30621974711328. Its totient is φ = 3971989157760.

The previous prime is 12015021199967. The next prime is 12015021200033. The reversal of 12015021200004 is 40000212051021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 12015021200004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6889984 + ... + 8455880.

It is an arithmetic number, because the mean of its divisors is an integer number (425305204324).

Almost surely, 2^{12015021200004} is an apocalyptic number.

It is an amenable number.

12015021200004 is an abundant number, since it is smaller than the sum of its proper divisors (18606953511324).

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

12015021200004 is a wasteful number, since it uses less digits than its factorization.

12015021200004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567665 (or 1567660 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 12015021200004 its reverse (40000212051021), we get a palindrome (52015233251025).

It can be divided in two parts, 12015021 and 200004, that added together give a square (12215025 = 3495²).

The spelling of 12015021200004 in words is "twelve trillion, fifteen billion, twenty-one million, two hundred thousand, four".