12212012202112 has 32 divisors (see below), whose sum is σ = 24450872472000. Its totient is φ = 6075322640640.

The previous prime is 12212012202107. The next prime is 12212012202119. The reversal of 12212012202112 is 21120221021221.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 12212012202112.

It is not an unprimeable number, because it can be changed into a prime (12212012202119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239688964 + ... + 239739907.

It is an arithmetic number, because the mean of its divisors is an integer number (764089764750).

Almost surely, 2^{12212012202112} is an apocalyptic number.

It is an amenable number.

12212012202112 is an abundant number, since it is smaller than the sum of its proper divisors (12238860269888).

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

12212012202112 is an equidigital number, since it uses as much as digits as its factorization.

12212012202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479429084 (or 479429072 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12212012202112 its reverse (21120221021221), we get a palindrome (33332233223333).

The spelling of 12212012202112 in words is "twelve trillion, two hundred twelve billion, twelve million, two hundred two thousand, one hundred twelve".