220001722 has 8 divisors (see below), whose sum is σ = 347371200. Its totient is φ = 104211324.

The previous prime is 220001701. The next prime is 220001729. The reversal of 220001722 is 227100022.

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

It is a junction number, because it is equal to n+sod(n) for n = 220001696 and 220001705.

It is not an unprimeable number, because it can be changed into a prime (220001729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2894722 + ... + 2894797.

It is an arithmetic number, because the mean of its divisors is an integer number (43421400).

Almost surely, 2^220001722 is an apocalyptic number.

220001722 is a deficient number, since it is larger than the sum of its proper divisors (127369478).

220001722 is a wasteful number, since it uses less digits than its factorization.

220001722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789540.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 220001722 is about 14832.4550226859. The cubic root of 220001722 is about 603.6826487345.

Adding to 220001722 its reverse (227100022), we get a palindrome (447101744).

The spelling of 220001722 in words is "two hundred twenty million, one thousand, seven hundred twenty-two".