1122122022121 has 2 divisors, whose sum is σ = 1122122022122. Its totient is φ = 1122122022120.

The previous prime is 1122122022001. The next prime is 1122122022163. The reversal of 1122122022121 is 1212202212211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 710168571225 + 411953450896 = 842715^2 + 641836^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122122022121 - 2¹¹ = 1122122020073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122122022421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561061011060 + 561061011061.

It is an arithmetic number, because the mean of its divisors is an integer number (561061011061).

Almost surely, 2^{1122122022121} is an apocalyptic number.

It is an amenable number.

1122122022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122122022121 is an equidigital number, since it uses as much as digits as its factorization.

1122122022121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1122122022121 its reverse (1212202212211), we get a palindrome (2334324234332).

The spelling of 1122122022121 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty-one".