2104121 has 4 divisors (see below), whose sum is σ = 2110500. Its totient is φ = 2097744.

The previous prime is 2104111. The next prime is 2104129. The reversal of 2104121 is 1214012.

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 1784896 + 319225 = 1336^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104121 - 2⁶ = 2104057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2666 + ... + 3363.

It is an arithmetic number, because the mean of its divisors is an integer number (527625).

2^2104121 is an apocalyptic number.

It is an amenable number.

2104121 is a deficient number, since it is larger than the sum of its proper divisors (6379).

2104121 is an equidigital number, since it uses as much as digits as its factorization.

2104121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2104121 is about 1450.5588578200. The cubic root of 2104121 is about 128.1416279034.

Adding to 2104121 its reverse (1214012), we get a palindrome (3318133).

The spelling of 2104121 in words is "two million, one hundred four thousand, one hundred twenty-one".