12111121002 has 16 divisors (see below), whose sum is σ = 24292050912. Its totient is φ = 4025405520.

The previous prime is 12111120953. The next prime is 12111121007. The reversal of 12111121002 is 20012111121.

It is not an unprimeable number, because it can be changed into a prime (12111121007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2906449 + ... + 2910612.

It is an arithmetic number, because the mean of its divisors is an integer number (1518253182).

Almost surely, 2^12111121002 is an apocalyptic number.

12111121002 is an abundant number, since it is smaller than the sum of its proper divisors (12180929910).

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

12111121002 is a wasteful number, since it uses less digits than its factorization.

12111121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5817413.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12111121002 its reverse (20012111121), we get a palindrome (32123232123).

The spelling of 12111121002 in words is "twelve billion, one hundred eleven million, one hundred twenty-one thousand, two".