121766101 has 2 divisors, whose sum is σ = 121766102. Its totient is φ = 121766100.

The previous prime is 121766093. The next prime is 121766159. The reversal of 121766101 is 101667121.

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., 64400625 + 57365476 = 8025^2 + 7574^2 .

It is a cyclic number.

It is not a de Polignac number, because 121766101 - 2³ = 121766093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121766191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60883050 + 60883051.

It is an arithmetic number, because the mean of its divisors is an integer number (60883051).

Almost surely, 2^121766101 is an apocalyptic number.

It is an amenable number.

121766101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121766101 is an equidigital number, since it uses as much as digits as its factorization.

121766101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 121766101 is about 11034.7678271906. The cubic root of 121766101 is about 495.6504064585.

The spelling of 121766101 in words is "one hundred twenty-one million, seven hundred sixty-six thousand, one hundred one".