3012121 has 4 divisors (see below), whose sum is σ = 3442432. Its totient is φ = 2581812.

The previous prime is 3012109. The next prime is 3012131. The reversal of 3012121 is 1212103.

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 not a de Polignac number, because 3012121 - 2¹⁹ = 2487833 is a prime.

It is an alternating number because its digits alternate between odd and even.

3012121 is a modest number, since divided by 2121 gives 301 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 3012098 and 3012107.

It is not an unprimeable number, because it can be changed into a prime (3012101) 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 3 ways as a sum of consecutive naturals, for example, 215145 + ... + 215158.

It is an arithmetic number, because the mean of its divisors is an integer number (860608).

Almost surely, 2^3012121 is an apocalyptic number.

It is an amenable number.

3012121 is a deficient number, since it is larger than the sum of its proper divisors (430311).

3012121 is an equidigital number, since it uses as much as digits as its factorization.

3012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430310.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 3012121 is about 1735.5463116840. The cubic root of 3012121 is about 144.4189349868.

Adding to 3012121 its reverse (1212103), we get a palindrome (4224224).

The spelling of 3012121 in words is "three million, twelve thousand, one hundred twenty-one".