3112021121 has 4 divisors (see below), whose sum is σ = 3394932144. Its totient is φ = 2829110100.

The previous prime is 3112021111. The next prime is 3112021127. The reversal of 3112021121 is 1211202113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3112021121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3112021096 and 3112021105.

It is not an unprimeable number, because it can be changed into a prime (3112021127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141455495 + ... + 141455516.

It is an arithmetic number, because the mean of its divisors is an integer number (848733036).

Almost surely, 2^3112021121 is an apocalyptic number.

It is an amenable number.

3112021121 is a deficient number, since it is larger than the sum of its proper divisors (282911023).

3112021121 is a wasteful number, since it uses less digits than its factorization.

3112021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282911022.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 3112021121 is about 55785.4920297383. The cubic root of 3112021121 is about 1459.9820353391.

Adding to 3112021121 its reverse (1211202113), we get a palindrome (4323223234).

It can be divided in two parts, 311202112 and 1, that added together give a palindrome (311202113).

The spelling of 3112021121 in words is "three billion, one hundred twelve million, twenty-one thousand, one hundred twenty-one".