12121000123 has 2 divisors, whose sum is σ = 12121000124. Its totient is φ = 12121000122.

The previous prime is 12121000117. The next prime is 12121000127. The reversal of 12121000123 is 32100012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12121000123 - 2¹⁷ = 12120869051 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121000127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060500061 + 6060500062.

It is an arithmetic number, because the mean of its divisors is an integer number (6060500062).

Almost surely, 2^12121000123 is an apocalyptic number.

12121000123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121000123 is an equidigital number, since it uses as much as digits as its factorization.

12121000123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12121000123 its reverse (32100012121), we get a palindrome (44221012244).

The spelling of 12121000123 in words is "twelve billion, one hundred twenty-one million, one hundred twenty-three", and thus it is an aban number.