12121122112103 has 2 divisors, whose sum is σ = 12121122112104. Its totient is φ = 12121122112102.

The previous prime is 12121122112079. The next prime is 12121122112123. The reversal of 12121122112103 is 30121122112121.

It is an a-pointer prime, because the next prime (12121122112123) can be obtained adding 12121122112103 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121122112103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121122112123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060561056051 + 6060561056052.

It is an arithmetic number, because the mean of its divisors is an integer number (6060561056052).

Almost surely, 2^{12121122112103} is an apocalyptic number.

12121122112103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121122112103 is an equidigital number, since it uses as much as digits as its factorization.

12121122112103 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 20.

Adding to 12121122112103 its reverse (30121122112121), we get a palindrome (42242244224224).

The spelling of 12121122112103 in words is "twelve trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred three".