121010112103 has 2 divisors, whose sum is σ = 121010112104. Its totient is φ = 121010112102.

The previous prime is 121010112077. The next prime is 121010112133. The reversal of 121010112103 is 301211010121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121010112103 - 2²⁹ = 120473241191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121010112133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505056051 + 60505056052.

It is an arithmetic number, because the mean of its divisors is an integer number (60505056052).

Almost surely, 2^121010112103 is an apocalyptic number.

121010112103 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010112103 is an equidigital number, since it uses as much as digits as its factorization.

121010112103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121010112103 its reverse (301211010121), we get a palindrome (422221122224).

The spelling of 121010112103 in words is "one hundred twenty-one billion, ten million, one hundred twelve thousand, one hundred three".