12011112002121 has 12 divisors (see below), whose sum is σ = 16322683605648. Its totient is φ = 7856324826064.

The previous prime is 12011112002117. The next prime is 12011112002129. The reversal of 12011112002121 is 12120021111021.

It is a happy number.

It is not a de Polignac number, because 12011112002121 - 2² = 12011112002117 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12011112002121.

It is not an unprimeable number, because it can be changed into a prime (12011112002129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712648035 + ... + 712664888.

It is an arithmetic number, because the mean of its divisors is an integer number (1360223633804).

Almost surely, 2^{12011112002121} is an apocalyptic number.

It is an amenable number.

12011112002121 is a deficient number, since it is larger than the sum of its proper divisors (4311571603527).

12011112002121 is an equidigital number, since it uses as much as digits as its factorization.

12011112002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425313032 (or 1425312979 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12011112002121 its reverse (12120021111021), we get a palindrome (24131133113142).

The spelling of 12011112002121 in words is "twelve trillion, eleven billion, one hundred twelve million, two thousand, one hundred twenty-one".