2212102121 has 2 divisors, whose sum is σ = 2212102122. Its totient is φ = 2212102120.

The previous prime is 2212102111. The next prime is 2212102171. The reversal of 2212102121 is 1212012122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2017806400 + 194295721 = 44920^2 + 13939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212102121 - 2¹⁰ = 2212101097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212102096 and 2212102105.

It is not a weakly prime, because it can be changed into another prime (2212102111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106051060 + 1106051061.

It is an arithmetic number, because the mean of its divisors is an integer number (1106051061).

Almost surely, 2^2212102121 is an apocalyptic number.

It is an amenable number.

2212102121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212102121 is an equidigital number, since it uses as much as digits as its factorization.

2212102121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2212102121 is about 47032.9897093519. The cubic root of 2212102121 is about 1302.9719228171.

Adding to 2212102121 its reverse (1212012122), we get a palindrome (3424114243).

The spelling of 2212102121 in words is "two billion, two hundred twelve million, one hundred two thousand, one hundred twenty-one".