311330200021121 has 16 divisors (see below), whose sum is σ = 333788381521920. Its totient is φ = 289354930014720.

The previous prime is 311330200021081. The next prime is 311330200021133. The reversal of 311330200021121 is 121120002033113.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-311330200021121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311330200021093 and 311330200021102.

It is not an unprimeable number, because it can be changed into a prime (311330200023121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349490981 + ... + 350380658.

It is an arithmetic number, because the mean of its divisors is an integer number (20861773845120).

Almost surely, 2^{311330200021121} is an apocalyptic number.

It is an amenable number.

311330200021121 is a deficient number, since it is larger than the sum of its proper divisors (22458181500799).

311330200021121 is a wasteful number, since it uses less digits than its factorization.

311330200021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699871984.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311330200021121 its reverse (121120002033113), we get a palindrome (432450202054234).

The spelling of 311330200021121 in words is "three hundred eleven trillion, three hundred thirty billion, two hundred million, twenty-one thousand, one hundred twenty-one".