12012202120 has 32 divisors (see below), whose sum is σ = 27031005720. Its totient is φ = 4804249600.

The previous prime is 12012202117. The next prime is 12012202151. The reversal of 12012202120 is 2120221021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9249438276 + 2762763844 = 96174^2 + 52562^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12012202120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397464 + ... + 426616.

Almost surely, 2^12012202120 is an apocalyptic number.

12012202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012202120 is an abundant number, since it is smaller than the sum of its proper divisors (15018803600).

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

12012202120 is a wasteful number, since it uses less digits than its factorization.

12012202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39465 (or 39461 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12012202120 its reverse (2120221021), we get a palindrome (14132423141).

The spelling of 12012202120 in words is "twelve billion, twelve million, two hundred two thousand, one hundred twenty".