12012012210 has 32 divisors (see below), whose sum is σ = 31449632832. Its totient is φ = 2912002880.

The previous prime is 12012012191. The next prime is 12012012217. The reversal of 12012012210 is 1221021021.

It is not an unprimeable number, because it can be changed into a prime (12012012217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18199689 + ... + 18200348.

It is an arithmetic number, because the mean of its divisors is an integer number (982801026).

Almost surely, 2^12012012210 is an apocalyptic number.

12012012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012012210 is an abundant number, since it is smaller than the sum of its proper divisors (19437620622).

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

12012012210 is a wasteful number, since it uses less digits than its factorization.

12012012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36400058.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12012012210 its reverse (1221021021), we get a palindrome (13233033231).

The spelling of 12012012210 in words is "twelve billion, twelve million, twelve thousand, two hundred ten".