12135245212 has 6 divisors (see below), whose sum is σ = 21236679128. Its totient is φ = 6067622604.

The previous prime is 12135245207. The next prime is 12135245219. The reversal of 12135245212 is 21254253121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135245219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1516905648 + ... + 1516905655.

Almost surely, 2^12135245212 is an apocalyptic number.

It is an amenable number.

12135245212 is a deficient number, since it is larger than the sum of its proper divisors (9101433916).

12135245212 is a wasteful number, since it uses less digits than its factorization.

12135245212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033811307 (or 3033811305 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

Adding to 12135245212 its reverse (21254253121), we get a palindrome (33389498333).

It can be divided in two parts, 1213 and 5245212, that added together give a palindrome (5246425).

The spelling of 12135245212 in words is "twelve billion, one hundred thirty-five million, two hundred forty-five thousand, two hundred twelve".