222012205 has 16 divisors (see below), whose sum is σ = 271091520. Its totient is φ = 174506112.

The previous prime is 222012187. The next prime is 222012209. The reversal of 222012205 is 502210222.

It is a cyclic number.

It is not a de Polignac number, because 222012205 - 2²¹ = 219915053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222012209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196081 + ... + 197209.

It is an arithmetic number, because the mean of its divisors is an integer number (16943220).

Almost surely, 2^222012205 is an apocalyptic number.

It is an amenable number.

222012205 is a deficient number, since it is larger than the sum of its proper divisors (49079315).

222012205 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (222012204) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1788).

222012205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 222012205 is about 14900.0739931049. The cubic root of 222012205 is about 605.5159908250.

Adding to 222012205 its reverse (502210222), we get a palindrome (724222427).

The spelling of 222012205 in words is "two hundred twenty-two million, twelve thousand, two hundred five".