220123206 has 12 divisors (see below), whose sum is σ = 476933652. Its totient is φ = 73374396.

The previous prime is 220123199. The next prime is 220123223. The reversal of 220123206 is 602321022.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 12229067 = 220123206 / (2 + 2 + 0 + 1 + 2 + 3 + 2 + 0 + 6).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 6114516 + ... + 6114551.

It is an arithmetic number, because the mean of its divisors is an integer number (39744471).

Almost surely, 2^220123206 is an apocalyptic number.

220123206 is an abundant number, since it is smaller than the sum of its proper divisors (256810446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220123206 is a wasteful number, since it uses less digits than its factorization.

220123206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12229075 (or 12229072 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 220123206 is about 14836.5496662802. The cubic root of 220123206 is about 603.7937452711.

Adding to 220123206 its reverse (602321022), we get a palindrome (822444228).

The spelling of 220123206 in words is "two hundred twenty million, one hundred twenty-three thousand, two hundred six".