12121102100123 has 2 divisors, whose sum is σ = 12121102100124. Its totient is φ = 12121102100122.

The previous prime is 12121102100099. The next prime is 12121102100131. The reversal of 12121102100123 is 32100120112121.

It is a happy number.

12121102100123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12121102100123 - 2¹² = 12121102096027 is a prime.

It is a super-2 number, since 2×12121102100123² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12121102150123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060551050061 + 6060551050062.

It is an arithmetic number, because the mean of its divisors is an integer number (6060551050062).

Almost surely, 2^{12121102100123} is an apocalyptic number.

12121102100123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121102100123 is an equidigital number, since it uses as much as digits as its factorization.

12121102100123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12121102100123 its reverse (32100120112121), we get a palindrome (44221222212244).

The spelling of 12121102100123 in words is "twelve trillion, one hundred twenty-one billion, one hundred two million, one hundred thousand, one hundred twenty-three".