3311012021 has 12 divisors (see below), whose sum is σ = 3519608868. Its totient is φ = 3114143232.

The previous prime is 3311011967. The next prime is 3311012077. The reversal of 3311012021 is 1202101133.

It can be written as a sum of positive squares in 6 ways, for example, as 419799121 + 2891212900 = 20489^2 + 53770^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3311012021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3311011987 and 3311012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3311012521) 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, 574265 + ... + 580001.

It is an arithmetic number, because the mean of its divisors is an integer number (293300739).

Almost surely, 2^3311012021 is an apocalyptic number.

It is an amenable number.

3311012021 is a deficient number, since it is larger than the sum of its proper divisors (208596847).

3311012021 is a wasteful number, since it uses less digits than its factorization.

3311012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7768 (or 7751 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 3311012021 is about 57541.3939785960. The cubic root of 3311012021 is about 1490.4597504732.

Adding to 3311012021 its reverse (1202101133), we get a palindrome (4513113154).

The spelling of 3311012021 in words is "three billion, three hundred eleven million, twelve thousand, twenty-one".