3206121 has 4 divisors (see below), whose sum is σ = 4274832. Its totient is φ = 2137412.

The previous prime is 3206101. The next prime is 3206143. The reversal of 3206121 is 1216023.

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: 1216023 = 3 ⋅405341.

It is a cyclic number.

It is not a de Polignac number, because 3206121 - 2¹¹ = 3204073 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 3206121.

It is not an unprimeable number, because it can be changed into a prime (3206101) 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, 534351 + ... + 534356.

It is an arithmetic number, because the mean of its divisors is an integer number (1068708).

Almost surely, 2^3206121 is an apocalyptic number.

It is an amenable number.

3206121 is a deficient number, since it is larger than the sum of its proper divisors (1068711).

3206121 is a wasteful number, since it uses less digits than its factorization.

3206121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068710.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3206121 is about 1790.5644361486. The cubic root of 3206121 is about 147.4551582544.

It can be divided in two parts, 320 and 6121, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 3206121 in words is "three million, two hundred six thousand, one hundred twenty-one".