12012021010221 has 16 divisors (see below), whose sum is σ = 16020379200000. Its totient is φ = 8005838663088.

The previous prime is 12012021010211. The next prime is 12012021010229. The reversal of 12012021010221 is 12201012021021.

It is not a de Polignac number, because 12012021010221 - 2¹³ = 12012021002029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12012021010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012021010229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360196270 + ... + 360229616.

It is an arithmetic number, because the mean of its divisors is an integer number (1001273700000).

Almost surely, 2^{12012021010221} is an apocalyptic number.

It is an amenable number.

12012021010221 is a deficient number, since it is larger than the sum of its proper divisors (4008358189779).

12012021010221 is a wasteful number, since it uses less digits than its factorization.

12012021010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62368.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12012021010221 its reverse (12201012021021), we get a palindrome (24213033031242).

The spelling of 12012021010221 in words is "twelve trillion, twelve billion, twenty-one million, ten thousand, two hundred twenty-one".