220104121 has 2 divisors, whose sum is σ = 220104122. Its totient is φ = 220104120.

The previous prime is 220104119. The next prime is 220104127. The reversal of 220104121 is 121401022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220077225 + 26896 = 14835^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 220104121 - 2¹ = 220104119 is a prime.

Together with 220104119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (220104127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110052060 + 110052061.

It is an arithmetic number, because the mean of its divisors is an integer number (110052061).

Almost surely, 2^220104121 is an apocalyptic number.

It is an amenable number.

220104121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220104121 is an equidigital number, since it uses as much as digits as its factorization.

220104121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 220104121 is about 14835.9064771924. The cubic root of 220104121 is about 603.7762948367.

Adding to 220104121 its reverse (121401022), we get a palindrome (341505143).

The spelling of 220104121 in words is "two hundred twenty million, one hundred four thousand, one hundred twenty-one".