3121230121 has 8 divisors (see below), whose sum is σ = 3237571040. Its totient is φ = 3006878112.

The previous prime is 3121230109. The next prime is 3121230131. The reversal of 3121230121 is 1210321213.

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 3121230121 - 2¹⁵ = 3121197353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121230095 and 3121230104.

It is not an unprimeable number, because it can be changed into a prime (3121230131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494031 + ... + 500308.

It is an arithmetic number, because the mean of its divisors is an integer number (404696380).

Almost surely, 2^3121230121 is an apocalyptic number.

It is an amenable number.

3121230121 is a deficient number, since it is larger than the sum of its proper divisors (116340919).

3121230121 is an equidigital number, since it uses as much as digits as its factorization.

3121230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994455.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3121230121 is about 55867.9704392418. The cubic root of 3121230121 is about 1461.4207289096.

Adding to 3121230121 its reverse (1210321213), we get a palindrome (4331551334).

The spelling of 3121230121 in words is "three billion, one hundred twenty-one million, two hundred thirty thousand, one hundred twenty-one".