12100121211973 has 2 divisors, whose sum is σ = 12100121211974. Its totient is φ = 12100121211972.

The previous prime is 12100121211931. The next prime is 12100121212009. The reversal of 12100121211973 is 37911212100121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10559263248004 + 1540857963969 = 3249502^2 + 1241313^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100121211973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100121241973) 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, 6050060605986 + 6050060605987.

It is an arithmetic number, because the mean of its divisors is an integer number (6050060605987).

Almost surely, 2^{12100121211973} is an apocalyptic number.

It is an amenable number.

12100121211973 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100121211973 is an equidigital number, since it uses as much as digits as its factorization.

12100121211973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 31.

The spelling of 12100121211973 in words is "twelve trillion, one hundred billion, one hundred twenty-one million, two hundred eleven thousand, nine hundred seventy-three".