12000121032311 has 4 divisors (see below), whose sum is σ = 12001573312272. Its totient is φ = 11998668752352.

The previous prime is 12000121032269. The next prime is 12000121032323. The reversal of 12000121032311 is 11323012100021.

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 12000121032311 - 2²⁶ = 12000053923447 is a prime.

It is a super-2 number, since 2×12000121032311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12000121032311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000121032511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726127586 + ... + 726144111.

It is an arithmetic number, because the mean of its divisors is an integer number (3000393328068).

Almost surely, 2^{12000121032311} is an apocalyptic number.

12000121032311 is a deficient number, since it is larger than the sum of its proper divisors (1452279961).

12000121032311 is an equidigital number, since it uses as much as digits as its factorization.

12000121032311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452279960.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12000121032311 its reverse (11323012100021), we get a palindrome (23323133132332).

The spelling of 12000121032311 in words is "twelve trillion, one hundred twenty-one million, thirty-two thousand, three hundred eleven".