121020120100129 has 2 divisors, whose sum is σ = 121020120100130. Its totient is φ = 121020120100128.

The previous prime is 121020120100043. The next prime is 121020120100223. The reversal of 121020120100129 is 921001021020121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120594660033600 + 425460066529 = 10981560^2 + 652273^2 .

It is an emirp because it is prime and its reverse (921001021020121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121020120100129 - 2²⁹ = 121019583229217 is a prime.

It is not a weakly prime, because it can be changed into another prime (121020120100829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510060050064 + 60510060050065.

It is an arithmetic number, because the mean of its divisors is an integer number (60510060050065).

Almost surely, 2^{121020120100129} is an apocalyptic number.

It is an amenable number.

121020120100129 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020120100129 is an equidigital number, since it uses as much as digits as its factorization.

121020120100129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 121020120100129 in words is "one hundred twenty-one trillion, twenty billion, one hundred twenty million, one hundred thousand, one hundred twenty-nine".