220211999 has 8 divisors (see below), whose sum is σ = 266475168. Its totient is φ = 177649920.

The previous prime is 220211989. The next prime is 220212023. The reversal of 220211999 is 999112022.

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

It is not a de Polignac number, because 220211999 - 2¹² = 220207903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925142 + ... + 925379.

It is an arithmetic number, because the mean of its divisors is an integer number (33309396).

Almost surely, 2^220211999 is an apocalyptic number.

220211999 is a deficient number, since it is larger than the sum of its proper divisors (46263169).

220211999 is a wasteful number, since it uses less digits than its factorization.

220211999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850545.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 220211999 is about 14839.5417382074. The cubic root of 220211999 is about 603.8749201911.

The spelling of 220211999 in words is "two hundred twenty million, two hundred eleven thousand, nine hundred ninety-nine".