12212001209999 has 4 divisors (see below), whose sum is σ = 12212095682136. Its totient is φ = 12211906737864.

The previous prime is 12212001209987. The next prime is 12212001210037. The reversal of 12212001209999 is 99990210021221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12212001209999 - 2¹⁶ = 12212001144463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212001209909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47041904 + ... + 47300789.

It is an arithmetic number, because the mean of its divisors is an integer number (3053023920534).

Almost surely, 2^{12212001209999} is an apocalyptic number.

12212001209999 is a deficient number, since it is larger than the sum of its proper divisors (94472137).

12212001209999 is an equidigital number, since it uses as much as digits as its factorization.

12212001209999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94472136.

The product of its (nonzero) digits is 104976, while the sum is 47.

The spelling of 12212001209999 in words is "twelve trillion, two hundred twelve billion, one million, two hundred nine thousand, nine hundred ninety-nine".