220004121 has 8 divisors (see below), whose sum is σ = 303454080. Its totient is φ = 141611792.

The previous prime is 220004111. The next prime is 220004129. The reversal of 220004121 is 121400022.

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 220004121 - 2¹⁰ = 220003097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220004097 and 220004106.

It is not an unprimeable number, because it can be changed into a prime (220004129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264305 + ... + 1264478.

It is an arithmetic number, because the mean of its divisors is an integer number (37931760).

Almost surely, 2^220004121 is an apocalyptic number.

It is an amenable number.

220004121 is a deficient number, since it is larger than the sum of its proper divisors (83449959).

220004121 is a wasteful number, since it uses less digits than its factorization.

220004121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528815.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 220004121 is about 14832.5358924224. The cubic root of 220004121 is about 603.6848430043.

Adding to 220004121 its reverse (121400022), we get a palindrome (341404143).

The spelling of 220004121 in words is "two hundred twenty million, four thousand, one hundred twenty-one".