12021011021212 has 24 divisors (see below), whose sum is σ = 21116901969072. Its totient is φ = 5987621136000.

The previous prime is 12021011021207. The next prime is 12021011021251. The reversal of 12021011021212 is 21212011012021.

It is a super-2 number, since 2×12021011021212² (a number of 27 digits) contains 22 as substring.

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, 3178087 + ... + 5843137.

It is an arithmetic number, because the mean of its divisors is an integer number (879870915378).

Almost surely, 2^{12021011021212} is an apocalyptic number.

It is an amenable number.

12021011021212 is a deficient number, since it is larger than the sum of its proper divisors (9095890947860).

12021011021212 is a wasteful number, since it uses less digits than its factorization.

12021011021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669349 (or 2669347 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12021011021212 its reverse (21212011012021), we get a palindrome (33233022033233).

The spelling of 12021011021212 in words is "twelve trillion, twenty-one billion, eleven million, twenty-one thousand, two hundred twelve".