1222102020121 has 2 divisors, whose sum is σ = 1222102020122. Its totient is φ = 1222102020120.

The previous prime is 1222102020071. The next prime is 1222102020163. The reversal of 1222102020121 is 1210202012221.

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., 1126782250000 + 95319770121 = 1061500^2 + 308739^2 .

It is an emirp because it is prime and its reverse (1210202012221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222102020121 - 2²³ = 1222093631513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222102020095 and 1222102020104.

It is not a weakly prime, because it can be changed into another prime (1222102020521) 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, 611051010060 + 611051010061.

It is an arithmetic number, because the mean of its divisors is an integer number (611051010061).

Almost surely, 2^{1222102020121} is an apocalyptic number.

It is an amenable number.

1222102020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222102020121 is an equidigital number, since it uses as much as digits as its factorization.

1222102020121 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 1222102020121 its reverse (1210202012221), we get a palindrome (2432304032342).

The spelling of 1222102020121 in words is "one trillion, two hundred twenty-two billion, one hundred two million, twenty thousand, one hundred twenty-one".