3123330121 has 4 divisors (see below), whose sum is σ = 3182260932. Its totient is φ = 3064399312.

The previous prime is 3123330101. The next prime is 3123330137. The reversal of 3123330121 is 1210333213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210333213 = 137 ⋅8834549.

It can be written as a sum of positive squares in 2 ways, for example, as 2617754896 + 505575225 = 51164^2 + 22485^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123330121 - 2²³ = 3114941513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123330101) 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, 29465326 + ... + 29465431.

It is an arithmetic number, because the mean of its divisors is an integer number (795565233).

Almost surely, 2^3123330121 is an apocalyptic number.

It is an amenable number.

3123330121 is a deficient number, since it is larger than the sum of its proper divisors (58930811).

3123330121 is an equidigital number, since it uses as much as digits as its factorization.

3123330121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58930810.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 3123330121 is about 55886.7615898434. The cubic root of 3123330121 is about 1461.7484090641.

Adding to 3123330121 its reverse (1210333213), we get a palindrome (4333663334).

The spelling of 3123330121 in words is "three billion, one hundred twenty-three million, three hundred thirty thousand, one hundred twenty-one".