220382121 has 16 divisors (see below), whose sum is σ = 309830400. Its totient is φ = 138953808.

The previous prime is 220382119. The next prime is 220382143. The reversal of 220382121 is 121283022.

It is a happy number.

It is not a de Polignac number, because 220382121 - 2¹ = 220382119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220382111) 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 15 ways as a sum of consecutive naturals, for example, 34630 + ... + 40496.

It is an arithmetic number, because the mean of its divisors is an integer number (19364400).

Almost surely, 2^220382121 is an apocalyptic number.

It is an amenable number.

220382121 is a deficient number, since it is larger than the sum of its proper divisors (89448279).

220382121 is a wasteful number, since it uses less digits than its factorization.

220382121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6548.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 220382121 is about 14845.2726819011. The cubic root of 220382121 is about 604.0303854792.

Subtracting from 220382121 its reverse (121283022), we obtain a palindrome (99099099).

The spelling of 220382121 in words is "two hundred twenty million, three hundred eighty-two thousand, one hundred twenty-one".