12212010121 has 2 divisors, whose sum is σ = 12212010122. Its totient is φ = 12212010120.

The previous prime is 12212010073. The next prime is 12212010127. The reversal of 12212010121 is 12101021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11704859721 + 507150400 = 108189^2 + 22520^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212010121 - 2⁹ = 12212009609 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212010127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106005060 + 6106005061.

It is an arithmetic number, because the mean of its divisors is an integer number (6106005061).

Almost surely, 2^12212010121 is an apocalyptic number.

It is an amenable number.

12212010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212010121 is an equidigital number, since it uses as much as digits as its factorization.

12212010121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12212010121 its reverse (12101021221), we get a palindrome (24313031342).

The spelling of 12212010121 in words is "twelve billion, two hundred twelve million, ten thousand, one hundred twenty-one".