220210121 has 8 divisors (see below), whose sum is σ = 226376064. Its totient is φ = 214129440.

The previous prime is 220210103. The next prime is 220210141. The reversal of 220210121 is 121012022.

It is a happy number.

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

It is not a de Polignac number, because 220210121 - 2¹⁴ = 220193737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220210141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16061 + ... + 26426.

It is an arithmetic number, because the mean of its divisors is an integer number (28297008).

Almost surely, 2^220210121 is an apocalyptic number.

It is an amenable number.

220210121 is a deficient number, since it is larger than the sum of its proper divisors (6165943).

220210121 is an equidigital number, since it uses as much as digits as its factorization.

220210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42631.

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

The square root of 220210121 is about 14839.4784611859. The cubic root of 220210121 is about 603.8732035418.

Adding to 220210121 its reverse (121012022), we get a palindrome (341222143).

The spelling of 220210121 in words is "two hundred twenty million, two hundred ten thousand, one hundred twenty-one".