12111121111002 has 16 divisors (see below), whose sum is σ = 24233451059712. Its totient is φ = 4035172230720.

The previous prime is 12111121110983. The next prime is 12111121111003. The reversal of 12111121111002 is 20011112111121.

It is not an unprimeable number, because it can be changed into a prime (12111121111003) 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 7 ways as a sum of consecutive naturals, for example, 467020858 + ... + 467046789.

It is an arithmetic number, because the mean of its divisors is an integer number (1514590691232).

Almost surely, 2^{12111121111002} is an apocalyptic number.

12111121111002 is an abundant number, since it is smaller than the sum of its proper divisors (12122329948710).

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

12111121111002 is a wasteful number, since it uses less digits than its factorization.

12111121111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934069813.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12111121111002 its reverse (20011112111121), we get a palindrome (32122233222123).

The spelling of 12111121111002 in words is "twelve trillion, one hundred eleven billion, one hundred twenty-one million, one hundred eleven thousand, two".