12021021022012 has 24 divisors (see below), whose sum is σ = 22313024173440. Its totient is φ = 5650700917680.

The previous prime is 12021021022007. The next prime is 12021021022039. The reversal of 12021021022012 is 21022012012021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603697408 + ... + 603717319.

It is an arithmetic number, because the mean of its divisors is an integer number (929709340560).

Almost surely, 2^{12021021022012} is an apocalyptic number.

It is an amenable number.

12021021022012 is a deficient number, since it is larger than the sum of its proper divisors (10292003151428).

12021021022012 is a wasteful number, since it uses less digits than its factorization.

12021021022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207414881 (or 1207414879 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12021021022012 its reverse (21022012012021), we get a palindrome (33043033034033).

Subtracting 12021021022012 from its reverse (21022012012021), we obtain a palindrome (9000990990009).

The spelling of 12021021022012 in words is "twelve trillion, twenty-one billion, twenty-one million, twenty-two thousand, twelve".