222311022121 has 2 divisors, whose sum is σ = 222311022122. Its totient is φ = 222311022120.

The previous prime is 222311022097. The next prime is 222311022163. The reversal of 222311022121 is 121220113222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221642282521 + 668739600 = 470789^2 + 25860^2 .

It is a cyclic number.

It is not a de Polignac number, because 222311022121 - 2²³ = 222302633513 is a prime.

It is not a weakly prime, because it can be changed into another prime (222311022721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111155511060 + 111155511061.

It is an arithmetic number, because the mean of its divisors is an integer number (111155511061).

Almost surely, 2^222311022121 is an apocalyptic number.

It is an amenable number.

222311022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222311022121 is an equidigital number, since it uses as much as digits as its factorization.

222311022121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 222311022121 its reverse (121220113222), we get a palindrome (343531135343).

The spelling of 222311022121 in words is "two hundred twenty-two billion, three hundred eleven million, twenty-two thousand, one hundred twenty-one".