220001822 has 8 divisors (see below), whose sum is σ = 331731072. Its totient is φ = 109424800.

The previous prime is 220001819. The next prime is 220001827. The reversal of 220001822 is 228100022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 220001822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287579 + ... + 288342.

It is an arithmetic number, because the mean of its divisors is an integer number (41466384).

Almost surely, 2^220001822 is an apocalyptic number.

220001822 is a deficient number, since it is larger than the sum of its proper divisors (111729250).

220001822 is a wasteful number, since it uses less digits than its factorization.

220001822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576114.

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

The square root of 220001822 is about 14832.4583936716. The cubic root of 220001822 is about 603.6827402008.

Adding to 220001822 its reverse (228100022), we get a palindrome (448101844).

The spelling of 220001822 in words is "two hundred twenty million, one thousand, eight hundred twenty-two".