2222210213221 has 2 divisors, whose sum is σ = 2222210213222. Its totient is φ = 2222210213220.

The previous prime is 2222210213213. The next prime is 2222210213239. The reversal of 2222210213221 is 1223120122222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1246826824996 + 975383388225 = 1116614^2 + 987615^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222210213221 - 2³ = 2222210213213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222210213192 and 2222210213201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222210213291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111105106610 + 1111105106611.

It is an arithmetic number, because the mean of its divisors is an integer number (1111105106611).

Almost surely, 2^{2222210213221} is an apocalyptic number.

It is an amenable number.

2222210213221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222210213221 is an equidigital number, since it uses as much as digits as its factorization.

2222210213221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 2222210213221 its reverse (1223120122222), we get a palindrome (3445330335443).

Subtracting from 2222210213221 its reverse (1223120122222), we obtain a palindrome (999090090999).

The spelling of 2222210213221 in words is "two trillion, two hundred twenty-two billion, two hundred ten million, two hundred thirteen thousand, two hundred twenty-one".