220121210027 has 2 divisors, whose sum is σ = 220121210028. Its totient is φ = 220121210026.

The previous prime is 220121210011. The next prime is 220121210119. The reversal of 220121210027 is 720012121022.

220121210027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220121210027 - 2⁴ = 220121210011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220121209990 and 220121210008.

It is not a weakly prime, because it can be changed into another prime (220121210927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060605013 + 110060605014.

It is an arithmetic number, because the mean of its divisors is an integer number (110060605014).

Almost surely, 2^220121210027 is an apocalyptic number.

220121210027 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121210027 is an equidigital number, since it uses as much as digits as its factorization.

220121210027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 220121210027 its reverse (720012121022), we get a palindrome (940133331049).

The spelling of 220121210027 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred ten thousand, twenty-seven".