121201212210101 has 2 divisors, whose sum is σ = 121201212210102. Its totient is φ = 121201212210100.

The previous prime is 121201212210097. The next prime is 121201212210103. The reversal of 121201212210101 is 101012212102121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111109624131025 + 10091588079076 = 10540855^2 + 3176726^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201212210101 - 2² = 121201212210097 is a prime.

Together with 121201212210103, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121201212210101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201212210103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600606105050 + 60600606105051.

It is an arithmetic number, because the mean of its divisors is an integer number (60600606105051).

Almost surely, 2^{121201212210101} is an apocalyptic number.

It is an amenable number.

121201212210101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201212210101 is an equidigital number, since it uses as much as digits as its factorization.

121201212210101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121201212210101 its reverse (101012212102121), we get a palindrome (222213424312222).

The spelling of 121201212210101 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred twelve million, two hundred ten thousand, one hundred one".