12120030212 has 24 divisors (see below), whose sum is σ = 21428441496. Its totient is φ = 5997938688.

The previous prime is 12120030211. The next prime is 12120030217. The reversal of 12120030212 is 21203002121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7734147136 + 4385883076 = 87944^2 + 66226^2 .

It is not an unprimeable number, because it can be changed into a prime (12120030211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112238 + ... + 191930.

It is an arithmetic number, because the mean of its divisors is an integer number (892851729).

Almost surely, 2^12120030212 is an apocalyptic number.

It is an amenable number.

12120030212 is a deficient number, since it is larger than the sum of its proper divisors (9308411284).

12120030212 is a wasteful number, since it uses less digits than its factorization.

12120030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80087 (or 80085 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12120030212 its reverse (21203002121), we get a palindrome (33323032333).

The spelling of 12120030212 in words is "twelve billion, one hundred twenty million, thirty thousand, two hundred twelve".