1223214112121 has 2 divisors, whose sum is σ = 1223214112122. Its totient is φ = 1223214112120.

The previous prime is 1223214112093. The next prime is 1223214112139. The reversal of 1223214112121 is 1212114123221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 682996462096 + 540217650025 = 826436^2 + 734995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223214112121 - 2¹⁴ = 1223214095737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223214112621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611607056060 + 611607056061.

It is an arithmetic number, because the mean of its divisors is an integer number (611607056061).

Almost surely, 2^{1223214112121} is an apocalyptic number.

It is an amenable number.

1223214112121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223214112121 is an equidigital number, since it uses as much as digits as its factorization.

1223214112121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 23.

Adding to 1223214112121 its reverse (1212114123221), we get a palindrome (2435328235342).

The spelling of 1223214112121 in words is "one trillion, two hundred twenty-three billion, two hundred fourteen million, one hundred twelve thousand, one hundred twenty-one".