120222112121 has 2 divisors, whose sum is σ = 120222112122. Its totient is φ = 120222112120.

The previous prime is 120222112079. The next prime is 120222112123. The reversal of 120222112121 is 121211222021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110423290000 + 9798822121 = 332300^2 + 98989^2 .

It is a cyclic number.

It is not a de Polignac number, because 120222112121 - 2¹⁸ = 120221849977 is a prime.

Together with 120222112123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120222112121.

It is not a weakly prime, because it can be changed into another prime (120222112123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60111056060 + 60111056061.

It is an arithmetic number, because the mean of its divisors is an integer number (60111056061).

Almost surely, 2^120222112121 is an apocalyptic number.

It is an amenable number.

120222112121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120222112121 is an equidigital number, since it uses as much as digits as its factorization.

120222112121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120222112121 its reverse (121211222021), we get a palindrome (241433334142).

The spelling of 120222112121 in words is "one hundred twenty billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twenty-one".