12001211212 has 6 divisors (see below), whose sum is σ = 21002119628. Its totient is φ = 6000605604.

The previous prime is 12001211207. The next prime is 12001211227. The reversal of 12001211212 is 21211210021.

It is a junction number, because it is equal to n+sod(n) for n = 12001211192 and 12001211201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1500151398 + ... + 1500151405.

Almost surely, 2^12001211212 is an apocalyptic number.

It is an amenable number.

12001211212 is a deficient number, since it is larger than the sum of its proper divisors (9000908416).

12001211212 is a wasteful number, since it uses less digits than its factorization.

12001211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000302807 (or 3000302805 counting only the distinct ones).

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

Adding to 12001211212 its reverse (21211210021), we get a palindrome (33212421233).

The spelling of 12001211212 in words is "twelve billion, one million, two hundred eleven thousand, two hundred twelve".