12012111012210 has 32 divisors (see below), whose sum is σ = 29049135648192. Its totient is φ = 3178777467840.

The previous prime is 12012111012137. The next prime is 12012111012221. The reversal of 12012111012210 is 1221011121021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 12012111012210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1528254469 + ... + 1528262328.

It is an arithmetic number, because the mean of its divisors is an integer number (907785489006).

Almost surely, 2^{12012111012210} is an apocalyptic number.

12012111012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012111012210 is an abundant number, since it is smaller than the sum of its proper divisors (17037024635982).

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

12012111012210 is a wasteful number, since it uses less digits than its factorization.

12012111012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056516938.

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

Adding to 12012111012210 its reverse (1221011121021), we get a palindrome (13233122133231).

The spelling of 12012111012210 in words is "twelve trillion, twelve billion, one hundred eleven million, twelve thousand, two hundred ten".