311221210202011 has 6 divisors (see below), whose sum is σ = 330605230214900. Its totient is φ = 292914080189856.

The previous prime is 311221210201961. The next prime is 311221210202027. The reversal of 311221210202011 is 110202012122113.

It is a de Polignac number, because none of the positive numbers 2^k-311221210202011 is a prime.

It is a super-3 number, since 3×311221210202011³ (a number of 44 digits) contains 333 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 311221210202011.

It is not an unprimeable number, because it can be changed into a prime (311221210802011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 538445000061 + ... + 538445000638.

Almost surely, 2^{311221210202011} is an apocalyptic number.

311221210202011 is a deficient number, since it is larger than the sum of its proper divisors (19384020012889).

311221210202011 is a wasteful number, since it uses less digits than its factorization.

311221210202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076890000733 (or 1076890000716 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 311221210202011 its reverse (110202012122113), we get a palindrome (421423222324124).

The spelling of 311221210202011 in words is "three hundred eleven trillion, two hundred twenty-one billion, two hundred ten million, two hundred two thousand, eleven".