220122212111201 has 4 divisors (see below), whose sum is σ = 224275461396372. Its totient is φ = 215968962826032.

The previous prime is 220122212111161. The next prime is 220122212111273. The reversal of 220122212111201 is 102111212221022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181013748598225 + 39108463512976 = 13454135^2 + 6253676^2 .

It is a cyclic number.

It is not a de Polignac number, because 220122212111201 - 2³⁸ = 219847334204257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220122212111281) 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 in 3 ways as a sum of consecutive naturals, for example, 2076624642506 + ... + 2076624642611.

It is an arithmetic number, because the mean of its divisors is an integer number (56068865349093).

Almost surely, 2^{220122212111201} is an apocalyptic number.

It is an amenable number.

220122212111201 is a deficient number, since it is larger than the sum of its proper divisors (4153249285171).

220122212111201 is an equidigital number, since it uses as much as digits as its factorization.

220122212111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153249285170.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 220122212111201 its reverse (102111212221022), we get a palindrome (322233424332223).

The spelling of 220122212111201 in words is "two hundred twenty trillion, one hundred twenty-two billion, two hundred twelve million, one hundred eleven thousand, two hundred one".