220021225211 has 2 divisors, whose sum is σ = 220021225212. Its totient is φ = 220021225210.

The previous prime is 220021225199. The next prime is 220021225217. The reversal of 220021225211 is 112522120022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220021225211 is a prime.

It is not a weakly prime, because it can be changed into another prime (220021225217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010612605 + 110010612606.

It is an arithmetic number, because the mean of its divisors is an integer number (110010612606).

Almost surely, 2^220021225211 is an apocalyptic number.

220021225211 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021225211 is an equidigital number, since it uses as much as digits as its factorization.

220021225211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 220021225211 its reverse (112522120022), we get a palindrome (332543345233).

The spelling of 220021225211 in words is "two hundred twenty billion, twenty-one million, two hundred twenty-five thousand, two hundred eleven".