212212332121 has 2 divisors, whose sum is σ = 212212332122. Its totient is φ = 212212332120.

The previous prime is 212212332107. The next prime is 212212332229. The reversal of 212212332121 is 121233212212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188213674896 + 23998657225 = 433836^2 + 154915^2 .

It is a cyclic number.

It is not a de Polignac number, because 212212332121 - 2⁵ = 212212332089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212212332092 and 212212332101.

It is not a weakly prime, because it can be changed into another prime (212212362121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106166060 + 106106166061.

It is an arithmetic number, because the mean of its divisors is an integer number (106106166061).

Almost surely, 2^212212332121 is an apocalyptic number.

It is an amenable number.

212212332121 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212332121 is an equidigital number, since it uses as much as digits as its factorization.

212212332121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

Adding to 212212332121 its reverse (121233212212), we get a palindrome (333445544333).

The spelling of 212212332121 in words is "two hundred twelve billion, two hundred twelve million, three hundred thirty-two thousand, one hundred twenty-one".