2422167221 has 2 divisors, whose sum is σ = 2422167222. Its totient is φ = 2422167220.

The previous prime is 2422167217. The next prime is 2422167227. The reversal of 2422167221 is 1227612242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1858816996 + 563350225 = 43114^2 + 23735^2 .

It is a cyclic number.

It is not a de Polignac number, because 2422167221 - 2² = 2422167217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2422167227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211083610 + 1211083611.

It is an arithmetic number, because the mean of its divisors is an integer number (1211083611).

Almost surely, 2^2422167221 is an apocalyptic number.

It is an amenable number.

2422167221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2422167221 is an equidigital number, since it uses as much as digits as its factorization.

2422167221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

The square root of 2422167221 is about 49215.5180913500. The cubic root of 2422167221 is about 1342.9753484097.

Adding to 2422167221 its reverse (1227612242), we get a palindrome (3649779463).

The spelling of 2422167221 in words is "two billion, four hundred twenty-two million, one hundred sixty-seven thousand, two hundred twenty-one".