22002210221 has 2 divisors, whose sum is σ = 22002210222. Its totient is φ = 22002210220.

The previous prime is 22002210211. The next prime is 22002210233. The reversal of 22002210221 is 12201220022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21717916900 + 284293321 = 147370^2 + 16861^2 .

It is a cyclic number.

It is not a de Polignac number, because 22002210221 - 2¹⁰ = 22002209197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22002210196 and 22002210205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22002210211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11001105110 + 11001105111.

It is an arithmetic number, because the mean of its divisors is an integer number (11001105111).

Almost surely, 2^22002210221 is an apocalyptic number.

It is an amenable number.

22002210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22002210221 is an equidigital number, since it uses as much as digits as its factorization.

22002210221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22002210221 its reverse (12201220022), we get a palindrome (34203430243).

The spelling of 22002210221 in words is "twenty-two billion, two million, two hundred ten thousand, two hundred twenty-one".