12222022002221 has 4 divisors (see below), whose sum is σ = 12232963831452. Its totient is φ = 12211080172992.

The previous prime is 12222022002193. The next prime is 12222022002247. The reversal of 12222022002221 is 12220022022221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3605008526596 + 8617013475625 = 1898686^2 + 2935475^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222022002221 - 2³⁸ = 11947144095277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222022002193 and 12222022002202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222022002521) 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 3 ways as a sum of consecutive naturals, for example, 5470912940 + ... + 5470915173.

It is an arithmetic number, because the mean of its divisors is an integer number (3058240957863).

Almost surely, 2^{12222022002221} is an apocalyptic number.

It is an amenable number.

12222022002221 is a deficient number, since it is larger than the sum of its proper divisors (10941829231).

12222022002221 is a wasteful number, since it uses less digits than its factorization.

12222022002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10941829230.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12222022002221 its reverse (12220022022221), we get a palindrome (24442044024442).

The spelling of 12222022002221 in words is "twelve trillion, two hundred twenty-two billion, twenty-two million, two thousand, two hundred twenty-one".