3102121 has 4 divisors (see below), whose sum is σ = 3384144. Its totient is φ = 2820100.

The previous prime is 3102107. The next prime is 3102131. The reversal of 3102121 is 1212013.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1212013 = 11 ⋅110183.

It is a cyclic number.

It is not a de Polignac number, because 3102121 - 2¹⁹ = 2577833 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3102098 and 3102107.

It is not an unprimeable number, because it can be changed into a prime (3102131) 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, 140995 + ... + 141016.

It is an arithmetic number, because the mean of its divisors is an integer number (846036).

Almost surely, 2^3102121 is an apocalyptic number.

It is an amenable number.

3102121 is a deficient number, since it is larger than the sum of its proper divisors (282023).

3102121 is a wasteful number, since it uses less digits than its factorization.

3102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282022.

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

The square root of 3102121 is about 1761.2839066999. The cubic root of 3102121 is about 145.8432200825.

Adding to 3102121 its reverse (1212013), we get a palindrome (4314134).

It can be divided in two parts, 3102 and 121, that added together give a palindrome (3223).

The spelling of 3102121 in words is "three million, one hundred two thousand, one hundred twenty-one".