2205121 has 8 divisors (see below), whose sum is σ = 2458080. Its totient is φ = 1965888.

The previous prime is 2205113. The next prime is 2205139. The reversal of 2205121 is 1215022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2205121 - 2³ = 2205113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2205521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3091 + ... + 3736.

It is an arithmetic number, because the mean of its divisors is an integer number (307260).

2^2205121 is an apocalyptic number.

It is an amenable number.

2205121 is a deficient number, since it is larger than the sum of its proper divisors (252959).

2205121 is a wasteful number, since it uses less digits than its factorization.

2205121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6863.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2205121 is about 1484.9649827521. The cubic root of 2205121 is about 130.1599805588.

Subtracting from 2205121 its reverse (1215022), we obtain a palindrome (990099).

The spelling of 2205121 in words is "two million, two hundred five thousand, one hundred twenty-one".