121001100010201 has 2 divisors, whose sum is σ = 121001100010202. Its totient is φ = 121001100010200.

The previous prime is 121001100010187. The next prime is 121001100010277. The reversal of 121001100010201 is 102010001100121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117294878236176 + 3706221774025 = 10830276^2 + 1925155^2 .

It is an emirp because it is prime and its reverse (102010001100121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121001100010201 - 2⁵ = 121001100010169 is a prime.

It is not a weakly prime, because it can be changed into another prime (121001100011201) 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, 60500550005100 + 60500550005101.

It is an arithmetic number, because the mean of its divisors is an integer number (60500550005101).

Almost surely, 2^{121001100010201} is an apocalyptic number.

It is an amenable number.

121001100010201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001100010201 is an equidigital number, since it uses as much as digits as its factorization.

121001100010201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121001100010201 its reverse (102010001100121), we get a palindrome (223011101110322).

The spelling of 121001100010201 in words is "one hundred twenty-one trillion, one billion, one hundred million, ten thousand, two hundred one".