12012011212 has 6 divisors (see below), whose sum is σ = 21021019628. Its totient is φ = 6006005604.

The previous prime is 12012011191. The next prime is 12012011287. The reversal of 12012011212 is 21211021021.

It is a junction number, because it is equal to n+sod(n) for n = 12012011192 and 12012011201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1501501398 + ... + 1501501405.

Almost surely, 2^12012011212 is an apocalyptic number.

It is an amenable number.

12012011212 is a deficient number, since it is larger than the sum of its proper divisors (9009008416).

12012011212 is a wasteful number, since it uses less digits than its factorization.

12012011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003002807 (or 3003002805 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12012011212 its reverse (21211021021), we get a palindrome (33223032233).

The spelling of 12012011212 in words is "twelve billion, twelve million, eleven thousand, two hundred twelve".