3011311012221 has 12 divisors (see below), whose sum is σ = 4349686679520. Its totient is φ = 2007533651400.

The previous prime is 3011311012211. The next prime is 3011311012223. The reversal of 3011311012221 is 1222101131103.

3011311012221 is a `hidden beast` number, since 301 + 131 + 1 + 0 + 12 + 221 = 666.

It is not a de Polignac number, because 3011311012221 - 2⁵ = 3011311012189 is a prime.

It is a super-2 number, since 2×3011311012221² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3011311012194 and 3011311012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3011311012223) 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, 4126896 + ... + 4801446.

It is an arithmetic number, because the mean of its divisors is an integer number (362473889960).

Almost surely, 2^{3011311012221} is an apocalyptic number.

It is an amenable number.

3011311012221 is a deficient number, since it is larger than the sum of its proper divisors (1338375667299).

3011311012221 is a wasteful number, since it uses less digits than its factorization.

3011311012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170576 (or 1170573 counting only the distinct ones).

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

Adding to 3011311012221 its reverse (1222101131103), we get a palindrome (4233412143324).

The spelling of 3011311012221 in words is "three trillion, eleven billion, three hundred eleven million, twelve thousand, two hundred twenty-one".