121212021163 has 2 divisors, whose sum is σ = 121212021164. Its totient is φ = 121212021162.

The previous prime is 121212021097. The next prime is 121212021193. The reversal of 121212021163 is 361120212121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121212021163 - 2⁹ = 121212020651 is a prime.

It is not a weakly prime, because it can be changed into another prime (121212021193) 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, 60606010581 + 60606010582.

It is an arithmetic number, because the mean of its divisors is an integer number (60606010582).

Almost surely, 2^121212021163 is an apocalyptic number.

121212021163 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212021163 is an equidigital number, since it uses as much as digits as its factorization.

121212021163 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 22.

Adding to 121212021163 its reverse (361120212121), we get a palindrome (482332233284).

The spelling of 121212021163 in words is "one hundred twenty-one billion, two hundred twelve million, twenty-one thousand, one hundred sixty-three".