2222262251221 has 2 divisors, whose sum is σ = 2222262251222. Its totient is φ = 2222262251220.

The previous prime is 2222262251189. The next prime is 2222262251233. The reversal of 2222262251221 is 1221522622222.

2222262251221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1902261600625 + 320000650596 = 1379225^2 + 565686^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222262251221 - 2⁵ = 2222262251189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222262251281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111131125610 + 1111131125611.

It is an arithmetic number, because the mean of its divisors is an integer number (1111131125611).

Almost surely, 2^{2222262251221} is an apocalyptic number.

It is an amenable number.

2222262251221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222262251221 is an equidigital number, since it uses as much as digits as its factorization.

2222262251221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 31.

Adding to 2222262251221 its reverse (1221522622222), we get a palindrome (3443784873443).

The spelling of 2222262251221 in words is "two trillion, two hundred twenty-two billion, two hundred sixty-two million, two hundred fifty-one thousand, two hundred twenty-one".