3112012021 has 8 divisors (see below), whose sum is σ = 3225446840. Its totient is φ = 3000120768.

The previous prime is 3112011997. The next prime is 3112012031. The reversal of 3112012021 is 1202102113.

It can be written as a sum of positive squares in 4 ways, for example, as 2158067025 + 953944996 = 46455^2 + 30886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3112012021 - 2⁵ = 3112011989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3112011992 and 3112012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112012031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381786 + ... + 389851.

It is an arithmetic number, because the mean of its divisors is an integer number (403180855).

Almost surely, 2^3112012021 is an apocalyptic number.

It is an amenable number.

3112012021 is a deficient number, since it is larger than the sum of its proper divisors (113434819).

3112012021 is a wasteful number, since it uses less digits than its factorization.

3112012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771783.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 3112012021 is about 55785.4104672539. The cubic root of 3112012021 is about 1459.9806122715.

Adding to 3112012021 its reverse (1202102113), we get a palindrome (4314114134).

The spelling of 3112012021 in words is "three billion, one hundred twelve million, twelve thousand, twenty-one".