1121220121163 has 2 divisors, whose sum is σ = 1121220121164. Its totient is φ = 1121220121162.

The previous prime is 1121220121159. The next prime is 1121220121211. The reversal of 1121220121163 is 3611210221211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121220121163 - 2² = 1121220121159 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121220126163) 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, 560610060581 + 560610060582.

It is an arithmetic number, because the mean of its divisors is an integer number (560610060582).

Almost surely, 2^{1121220121163} is an apocalyptic number.

1121220121163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121220121163 is an equidigital number, since it uses as much as digits as its factorization.

1121220121163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 1121220121163 its reverse (3611210221211), we get a palindrome (4732430342374).

The spelling of 1121220121163 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred sixty-three".