220010121 has 16 divisors (see below), whose sum is σ = 326369920. Its totient is φ = 146480400.

The previous prime is 220010117. The next prime is 220010129. The reversal of 220010121 is 121010022.

It is not a de Polignac number, because 220010121 - 2² = 220010117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220010129) 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, 17271 + ... + 27171.

It is an arithmetic number, because the mean of its divisors is an integer number (20398120).

Almost surely, 2^220010121 is an apocalyptic number.

It is an amenable number.

220010121 is a deficient number, since it is larger than the sum of its proper divisors (106359799).

220010121 is an equidigital number, since it uses as much as digits as its factorization.

220010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10733 (or 10727 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 220010121 is about 14832.7381491079. The cubic root of 220010121 is about 603.6903308956.

Adding to 220010121 its reverse (121010022), we get a palindrome (341020143).

Subtracting from 220010121 its reverse (121010022), we obtain a palindrome (99000099).

It can be divided in two parts, 2200 and 10121, that added together give a palindrome (12321).

The spelling of 220010121 in words is "two hundred twenty million, ten thousand, one hundred twenty-one".