220121206 has 8 divisors (see below), whose sum is σ = 331552584. Its totient is φ = 109603680.

The previous prime is 220121203. The next prime is 220121233. The reversal of 220121206 is 602121022.

220121206 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 220121206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121203) 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, 227860 + ... + 228823.

It is an arithmetic number, because the mean of its divisors is an integer number (41444073).

Almost surely, 2^220121206 is an apocalyptic number.

220121206 is a deficient number, since it is larger than the sum of its proper divisors (111431378).

220121206 is a wasteful number, since it uses less digits than its factorization.

220121206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456926.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 220121206 is about 14836.4822650115. The cubic root of 220121206 is about 603.7919166116.

Adding to 220121206 its reverse (602121022), we get a palindrome (822242228).

The spelling of 220121206 in words is "two hundred twenty million, one hundred twenty-one thousand, two hundred six".