2222245121 has 2 divisors, whose sum is σ = 2222245122. Its totient is φ = 2222245120.

The previous prime is 2222245099. The next prime is 2222245133. The reversal of 2222245121 is 1215422222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2044396225 + 177848896 = 45215^2 + 13336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2222245121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2222248121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111122560 + 1111122561.

It is an arithmetic number, because the mean of its divisors is an integer number (1111122561).

Almost surely, 2^2222245121 is an apocalyptic number.

It is an amenable number.

2222245121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222245121 is an equidigital number, since it uses as much as digits as its factorization.

2222245121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280, while the sum is 23.

The square root of 2222245121 is about 47140.6949566932. The cubic root of 2222245121 is about 1304.9603626584.

Adding to 2222245121 its reverse (1215422222), we get a palindrome (3437667343).

The spelling of 2222245121 in words is "two billion, two hundred twenty-two million, two hundred forty-five thousand, one hundred twenty-one".