1222012002121 has 2 divisors, whose sum is σ = 1222012002122. Its totient is φ = 1222012002120.

The previous prime is 1222012002091. The next prime is 1222012002149. The reversal of 1222012002121 is 1212002102221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 789325633600 + 432686368521 = 888440^2 + 657789^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222012002121 - 2⁵ = 1222012002089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222012002095 and 1222012002104.

It is not a weakly prime, because it can be changed into another prime (1222012002151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611006001060 + 611006001061.

It is an arithmetic number, because the mean of its divisors is an integer number (611006001061).

Almost surely, 2^{1222012002121} is an apocalyptic number.

It is an amenable number.

1222012002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222012002121 is an equidigital number, since it uses as much as digits as its factorization.

1222012002121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222012002121 its reverse (1212002102221), we get a palindrome (2434014104342).

The spelling of 1222012002121 in words is "one trillion, two hundred twenty-two billion, twelve million, two thousand, one hundred twenty-one".