12001121203311 has 32 divisors (see below), whose sum is σ = 18900497836800. Its totient is φ = 7504609370400.

The previous prime is 12001121203301. The next prime is 12001121203319. The reversal of 12001121203311 is 11330212110021.

12001121203311 is a `hidden beast` number, since 1 + 200 + 1 + 12 + 120 + 331 + 1 = 666.

It is not a de Polignac number, because 12001121203311 - 2²⁷ = 12000986985583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001121203319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115760061 + ... + 115863686.

It is an arithmetic number, because the mean of its divisors is an integer number (590640557400).

Almost surely, 2^{12001121203311} is an apocalyptic number.

12001121203311 is a deficient number, since it is larger than the sum of its proper divisors (6899376633489).

12001121203311 is a wasteful number, since it uses less digits than its factorization.

12001121203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231623876 (or 231623870 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12001121203311 its reverse (11330212110021), we get a palindrome (23331333313332).

The spelling of 12001121203311 in words is "twelve trillion, one billion, one hundred twenty-one million, two hundred three thousand, three hundred eleven".