121020002211181 has 2 divisors, whose sum is σ = 121020002211182. Its totient is φ = 121020002211180.

The previous prime is 121020002211169. The next prime is 121020002211217. The reversal of 121020002211181 is 181112200020121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77000028301156 + 44019973910025 = 8774966^2 + 6634755^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020002211181 - 2³³ = 121011412276589 is a prime.

It is a super-2 number, since 2×121020002211181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020002241181) 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, 60510001105590 + 60510001105591.

It is an arithmetic number, because the mean of its divisors is an integer number (60510001105591).

Almost surely, 2^{121020002211181} is an apocalyptic number.

It is an amenable number.

121020002211181 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020002211181 is an equidigital number, since it uses as much as digits as its factorization.

121020002211181 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 22.

The spelling of 121020002211181 in words is "one hundred twenty-one trillion, twenty billion, two million, two hundred eleven thousand, one hundred eighty-one".