12121200999499 has 2 divisors, whose sum is σ = 12121200999500. Its totient is φ = 12121200999498.

The previous prime is 12121200999487. The next prime is 12121200999547. The reversal of 12121200999499 is 99499900212121.

12121200999499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121200999499 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121200939499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060600499749 + 6060600499750.

It is an arithmetic number, because the mean of its divisors is an integer number (6060600499750).

Almost surely, 2^{12121200999499} is an apocalyptic number.

12121200999499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121200999499 is an equidigital number, since it uses as much as digits as its factorization.

12121200999499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1889568, while the sum is 58.

The spelling of 12121200999499 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, nine hundred ninety-nine thousand, four hundred ninety-nine".