12111222020221 has 8 divisors (see below), whose sum is σ = 12179372875488. Its totient is φ = 12043084770000.

The previous prime is 12111222020179. The next prime is 12111222020237. The reversal of 12111222020221 is 12202022211121.

12111222020221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111222020221 - 2²³ = 12111213631613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111222023221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1613215 + ... + 5179276.

It is an arithmetic number, because the mean of its divisors is an integer number (1522421609436).

Almost surely, 2^{12111222020221} is an apocalyptic number.

It is an amenable number.

12111222020221 is a deficient number, since it is larger than the sum of its proper divisors (68150855267).

12111222020221 is an equidigital number, since it uses as much as digits as its factorization.

12111222020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6802523.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12111222020221 its reverse (12202022211121), we get a palindrome (24313244231342).

The spelling of 12111222020221 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-two million, twenty thousand, two hundred twenty-one".