12001121212303 has 4 divisors (see below), whose sum is σ = 12001279846320. Its totient is φ = 12000962578288.

The previous prime is 12001121212291. The next prime is 12001121212309. The reversal of 12001121212303 is 30321212110021.

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 12001121212303 - 2²¹ = 12001119115151 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 (12001121212309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79203475 + ... + 79354852.

It is an arithmetic number, because the mean of its divisors is an integer number (3000319961580).

Almost surely, 2^{12001121212303} is an apocalyptic number.

12001121212303 is a deficient number, since it is larger than the sum of its proper divisors (158634017).

12001121212303 is an equidigital number, since it uses as much as digits as its factorization.

12001121212303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158634016.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12001121212303 its reverse (30321212110021), we get a palindrome (42322333322324).

The spelling of 12001121212303 in words is "twelve trillion, one billion, one hundred twenty-one million, two hundred twelve thousand, three hundred three".