121010101189 has 2 divisors, whose sum is σ = 121010101190. Its totient is φ = 121010101188.

The previous prime is 121010101169. The next prime is 121010101229. The reversal of 121010101189 is 981101010121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82538417025 + 38471684164 = 287295^2 + 196142^2 .

It is a cyclic number.

It is not a de Polignac number, because 121010101189 - 2⁷ = 121010101061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121010101159) 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, 60505050594 + 60505050595.

It is an arithmetic number, because the mean of its divisors is an integer number (60505050595).

Almost surely, 2^121010101189 is an apocalyptic number.

It is an amenable number.

121010101189 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010101189 is an equidigital number, since it uses as much as digits as its factorization.

121010101189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 121010101189 in words is "one hundred twenty-one billion, ten million, one hundred one thousand, one hundred eighty-nine".