220220022120221 has 2 divisors, whose sum is σ = 220220022120222. Its totient is φ = 220220022120220.

The previous prime is 220220022120167. The next prime is 220220022120277. The reversal of 220220022120221 is 122021220022022.

220220022120221 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 can be written as a sum of positive squares in only one way, i.e., 203285858887225 + 16934163232996 = 14257835^2 + 4115114^2 .

It is a cyclic number.

It is not a de Polignac number, because 220220022120221 - 2¹⁸ = 220220021858077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220220022120193 and 220220022120202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220220022140221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110011060110 + 110110011060111.

It is an arithmetic number, because the mean of its divisors is an integer number (110110011060111).

Almost surely, 2^{220220022120221} is an apocalyptic number.

It is an amenable number.

220220022120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220022120221 is an equidigital number, since it uses as much as digits as its factorization.

220220022120221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 220220022120221 its reverse (122021220022022), we get a palindrome (342241242142243).

The spelling of 220220022120221 in words is "two hundred twenty trillion, two hundred twenty billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".