220002811 has 4 divisors (see below), whose sum is σ = 251431792. Its totient is φ = 188573832.

The previous prime is 220002803. The next prime is 220002847. The reversal of 220002811 is 118200022.

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

It is a cyclic number.

It is not a de Polignac number, because 220002811 - 2³ = 220002803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220002611) 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, 15714480 + ... + 15714493.

It is an arithmetic number, because the mean of its divisors is an integer number (62857948).

Almost surely, 2^220002811 is an apocalyptic number.

220002811 is a deficient number, since it is larger than the sum of its proper divisors (31428981).

220002811 is an equidigital number, since it uses as much as digits as its factorization.

220002811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31428980.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 220002811 is about 14832.4917326793. The cubic root of 220002811 is about 603.6836448014.

Adding to 220002811 its reverse (118200022), we get a palindrome (338202833).

The spelling of 220002811 in words is "two hundred twenty million, two thousand, eight hundred eleven".