220234121 has 4 divisors (see below), whose sum is σ = 220275972. Its totient is φ = 220192272.

The previous prime is 220234097. The next prime is 220234123. The reversal of 220234121 is 121432022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58308496 + 161925625 = 7636^2 + 12725^2 .

It is a cyclic number.

It is not a de Polignac number, because 220234121 - 2²⁶ = 153125257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220234121.

It is not an unprimeable number, because it can be changed into a prime (220234123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11666 + ... + 24011.

It is an arithmetic number, because the mean of its divisors is an integer number (55068993).

Almost surely, 2^220234121 is an apocalyptic number.

It is an amenable number.

220234121 is a deficient number, since it is larger than the sum of its proper divisors (41851).

220234121 is an equidigital number, since it uses as much as digits as its factorization.

220234121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41850.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 220234121 is about 14840.2870929103. The cubic root of 220234121 is about 603.8951408175.

Adding to 220234121 its reverse (121432022), we get a palindrome (341666143).

The spelling of 220234121 in words is "two hundred twenty million, two hundred thirty-four thousand, one hundred twenty-one".