3120132121 has 4 divisors (see below), whose sum is σ = 3140005732. Its totient is φ = 3100258512.

The previous prime is 3120132109. The next prime is 3120132131. The reversal of 3120132121 is 1212310213.

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 1040772121 + 2079360000 = 32261^2 + 45600^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120132121 - 2⁵ = 3120132089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3120132095 and 3120132104.

It is not an unprimeable number, because it can be changed into a prime (3120132131) 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, 9936570 + ... + 9936883.

It is an arithmetic number, because the mean of its divisors is an integer number (785001433).

Almost surely, 2^3120132121 is an apocalyptic number.

It is an amenable number.

3120132121 is a deficient number, since it is larger than the sum of its proper divisors (19873611).

3120132121 is a wasteful number, since it uses less digits than its factorization.

3120132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19873610.

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

The square root of 3120132121 is about 55858.1428352214. The cubic root of 3120132121 is about 1461.2493404829.

Adding to 3120132121 its reverse (1212310213), we get a palindrome (4332442334).

The spelling of 3120132121 in words is "three billion, one hundred twenty million, one hundred thirty-two thousand, one hundred twenty-one".