12122012022021 has 64 divisors (see below), whose sum is σ = 19793575127040. Its totient is φ = 7270845534720.

The previous prime is 12122012021981. The next prime is 12122012022059. The reversal of 12122012022021 is 12022021022121.

It is a happy number.

12122012022021 is a `hidden beast` number, since 121 + 220 + 120 + 2 + 202 + 1 = 666.

It is not a de Polignac number, because 12122012022021 - 2¹⁰ = 12122012020997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122012021985 and 12122012022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122012026021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49649781 + ... + 49893333.

It is an arithmetic number, because the mean of its divisors is an integer number (309274611360).

Almost surely, 2^{12122012022021} is an apocalyptic number.

12122012022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12122012022021 is a deficient number, since it is larger than the sum of its proper divisors (7671563105019).

12122012022021 is a wasteful number, since it uses less digits than its factorization.

12122012022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245303 (or 245297 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12122012022021 its reverse (12022021022121), we get a palindrome (24144033044142).

The spelling of 12122012022021 in words is "twelve trillion, one hundred twenty-two billion, twelve million, twenty-two thousand, twenty-one".