12122000020221 has 128 divisors (see below), whose sum is σ = 20337537024000. Its totient is φ = 6252541182720.

The previous prime is 12122000020139. The next prime is 12122000020241. The reversal of 12122000020221 is 12202000022121.

It is not a de Polignac number, because 12122000020221 - 2¹⁵ = 12121999987453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12122000020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122000020241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4491291730 + ... + 4491294428.

It is an arithmetic number, because the mean of its divisors is an integer number (158887008000).

Almost surely, 2^{12122000020221} is an apocalyptic number.

It is an amenable number.

12122000020221 is a deficient number, since it is larger than the sum of its proper divisors (8215537003779).

12122000020221 is a wasteful number, since it uses less digits than its factorization.

12122000020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12122000020221 its reverse (12202000022121), we get a palindrome (24324000042342).

The spelling of 12122000020221 in words is "twelve trillion, one hundred twenty-two billion, twenty thousand, two hundred twenty-one".