12002111202138 has 64 divisors (see below), whose sum is σ = 25417163629440. Its totient is φ = 3771770462208.

The previous prime is 12002111202101. The next prime is 12002111202139. The reversal of 12002111202138 is 83120211120021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12002111202139) by changing a digit.

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, 24545770 + ... + 25029962.

It is an arithmetic number, because the mean of its divisors is an integer number (397143181710).

Almost surely, 2^{12002111202138} is an apocalyptic number.

12002111202138 is an abundant number, since it is smaller than the sum of its proper divisors (13415052427302).

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

12002111202138 is a wasteful number, since it uses less digits than its factorization.

12002111202138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487583.

The product of its (nonzero) digits is 384, while the sum is 24.

Adding to 12002111202138 its reverse (83120211120021), we get a palindrome (95122322322159).

The spelling of 12002111202138 in words is "twelve trillion, two billion, one hundred eleven million, two hundred two thousand, one hundred thirty-eight".