2311121220201 has 24 divisors (see below), whose sum is σ = 3349427827200. Its totient is φ = 1535613768000.

The previous prime is 2311121220179. The next prime is 2311121220251. The reversal of 2311121220201 is 1020221211132.

2311121220201 is a `hidden beast` number, since 231 + 1 + 1 + 212 + 20 + 201 = 666.

It is not a de Polignac number, because 2311121220201 - 2⁵ = 2311121220169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2311121220251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2883336 + ... + 3596646.

It is an arithmetic number, because the mean of its divisors is an integer number (139559492800).

Almost surely, 2^{2311121220201} is an apocalyptic number.

It is an amenable number.

2311121220201 is a deficient number, since it is larger than the sum of its proper divisors (1038306606999).

2311121220201 is a wasteful number, since it uses less digits than its factorization.

2311121220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714517 (or 714514 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2311121220201 its reverse (1020221211132), we get a palindrome (3331342431333).

The spelling of 2311121220201 in words is "two trillion, three hundred eleven billion, one hundred twenty-one million, two hundred twenty thousand, two hundred one".