3112244021 has 4 divisors (see below), whose sum is σ = 3128042412. Its totient is φ = 3096445632.

The previous prime is 3112243999. The next prime is 3112244027. The reversal of 3112244021 is 1204422113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2695063396 + 417180625 = 51914^2 + 20425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3112244021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3112243984 and 3112244002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112244027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7898900 + ... + 7899293.

It is an arithmetic number, because the mean of its divisors is an integer number (782010603).

Almost surely, 2^3112244021 is an apocalyptic number.

It is an amenable number.

3112244021 is a deficient number, since it is larger than the sum of its proper divisors (15798391).

3112244021 is a wasteful number, since it uses less digits than its factorization.

3112244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15798390.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 3112244021 is about 55787.4898252287. The cubic root of 3112244021 is about 1460.0168918106.

Adding to 3112244021 its reverse (1204422113), we get a palindrome (4316666134).

The spelling of 3112244021 in words is "three billion, one hundred twelve million, two hundred forty-four thousand, twenty-one".