222112102122121 has 2 divisors, whose sum is σ = 222112102122122. Its totient is φ = 222112102122120.

The previous prime is 222112102122109. The next prime is 222112102122149. The reversal of 222112102122121 is 121221201211222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190307239545721 + 31804862576400 = 13795189^2 + 5639580^2 .

It is a cyclic number.

It is not a de Polignac number, because 222112102122121 - 2⁷ = 222112102121993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222112102122092 and 222112102122101.

It is not a weakly prime, because it can be changed into another prime (222112102122221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111056051061060 + 111056051061061.

It is an arithmetic number, because the mean of its divisors is an integer number (111056051061061).

Almost surely, 2^{222112102122121} is an apocalyptic number.

It is an amenable number.

222112102122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222112102122121 is an equidigital number, since it uses as much as digits as its factorization.

222112102122121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222112102122121 its reverse (121221201211222), we get a palindrome (343333303333343).

The spelling of 222112102122121 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty-one".