12001000121212 has 6 divisors (see below), whose sum is σ = 21001750212128. Its totient is φ = 6000500060604.

The previous prime is 12001000121153. The next prime is 12001000121219. The reversal of 12001000121212 is 21212100010021.

It is a junction number, because it is equal to n+sod(n) for n = 12001000121192 and 12001000121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001000121219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1500125015148 + ... + 1500125015155.

Almost surely, 2^{12001000121212} is an apocalyptic number.

It is an amenable number.

12001000121212 is a deficient number, since it is larger than the sum of its proper divisors (9000750090916).

12001000121212 is a wasteful number, since it uses less digits than its factorization.

12001000121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000250030307 (or 3000250030305 counting only the distinct ones).

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

Adding to 12001000121212 its reverse (21212100010021), we get a palindrome (33213100131233).

The spelling of 12001000121212 in words is "twelve trillion, one billion, one hundred twenty-one thousand, two hundred twelve".