220336121 has 2 divisors, whose sum is σ = 220336122. Its totient is φ = 220336120.

The previous prime is 220336111. The next prime is 220336153. The reversal of 220336121 is 121633022.

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., 138180025 + 82156096 = 11755^2 + 9064^2 .

It is a cyclic number.

It is not a de Polignac number, because 220336121 - 2⁶ = 220336057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220336093 and 220336102.

It is not a weakly prime, because it can be changed into another prime (220336111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110168060 + 110168061.

It is an arithmetic number, because the mean of its divisors is an integer number (110168061).

Almost surely, 2^220336121 is an apocalyptic number.

It is an amenable number.

220336121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220336121 is an equidigital number, since it uses as much as digits as its factorization.

220336121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 220336121 is about 14843.7232862918. The cubic root of 220336121 is about 603.9883564631.

Adding to 220336121 its reverse (121633022), we get a palindrome (341969143).

The spelling of 220336121 in words is "two hundred twenty million, three hundred thirty-six thousand, one hundred twenty-one".