220221222101 has 4 divisors (see below), whose sum is σ = 220224264204. Its totient is φ = 220218180000.

The previous prime is 220221222019. The next prime is 220221222107. The reversal of 220221222101 is 101222122022.

It is a happy number.

220221222101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 68901000100 + 151320222001 = 262490^2 + 388999^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221222101 - 2¹⁸ = 220220959957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220221222101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221222107) 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, 1409750 + ... + 1558151.

It is an arithmetic number, because the mean of its divisors is an integer number (55056066051).

Almost surely, 2^220221222101 is an apocalyptic number.

It is an amenable number.

220221222101 is a deficient number, since it is larger than the sum of its proper divisors (3042103).

220221222101 is an equidigital number, since it uses as much as digits as its factorization.

220221222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042102.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220221222101 its reverse (101222122022), we get a palindrome (321443344123).

The spelling of 220221222101 in words is "two hundred twenty billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred one".