2122440432221 has 2 divisors, whose sum is σ = 2122440432222. Its totient is φ = 2122440432220.

The previous prime is 2122440432209. The next prime is 2122440432257. The reversal of 2122440432221 is 1222340442212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1935198160996 + 187242271225 = 1391114^2 + 432715^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122440432221 - 2⁶ = 2122440432157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122440438221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061220216110 + 1061220216111.

It is an arithmetic number, because the mean of its divisors is an integer number (1061220216111).

Almost surely, 2^{2122440432221} is an apocalyptic number.

It is an amenable number.

2122440432221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122440432221 is an equidigital number, since it uses as much as digits as its factorization.

2122440432221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 2122440432221 its reverse (1222340442212), we get a palindrome (3344780874433).

Subtracting from 2122440432221 its reverse (1222340442212), we obtain a palindrome (900099990009).

The spelling of 2122440432221 in words is "two trillion, one hundred twenty-two billion, four hundred forty million, four hundred thirty-two thousand, two hundred twenty-one".