121201212210103 has 2 divisors, whose sum is σ = 121201212210104. Its totient is φ = 121201212210102.

The previous prime is 121201212210101. The next prime is 121201212210173. The reversal of 121201212210103 is 301012212102121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121201212210103 - 2¹ = 121201212210101 is a prime.

Together with 121201212210101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201212210101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600606105051 + 60600606105052.

It is an arithmetic number, because the mean of its divisors is an integer number (60600606105052).

Almost surely, 2^{121201212210103} is an apocalyptic number.

121201212210103 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201212210103 is an equidigital number, since it uses as much as digits as its factorization.

121201212210103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 121201212210103 its reverse (301012212102121), we get a palindrome (422213424312224).

The spelling of 121201212210103 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred twelve million, two hundred ten thousand, one hundred three".