311221322202011 has 12 divisors (see below), whose sum is σ = 338202269073000. Its totient is φ = 286258867352640.

The previous prime is 311221322201947. The next prime is 311221322202067. The reversal of 311221322202011 is 110202223122113.

It is not a de Polignac number, because 311221322202011 - 2⁶ = 311221322201947 is a prime.

It is a super-2 number, since 2×311221322202011² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311221322202211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3276725261 + ... + 3276820238.

It is an arithmetic number, because the mean of its divisors is an integer number (28183522422750).

Almost surely, 2^{311221322202011} is an apocalyptic number.

311221322202011 is a deficient number, since it is larger than the sum of its proper divisors (26980946870989).

311221322202011 is a wasteful number, since it uses less digits than its factorization.

311221322202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553545806 (or 6553545793 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 311221322202011 its reverse (110202223122113), we get a palindrome (421423545324124).

The spelling of 311221322202011 in words is "three hundred eleven trillion, two hundred twenty-one billion, three hundred twenty-two million, two hundred two thousand, eleven".