222222050172 has 36 divisors (see below), whose sum is σ = 576909800376. Its totient is φ = 72072015840.

The previous prime is 222222050137. The next prime is 222222050173. The reversal of 222222050172 is 271050222222.

It is a happy number.

222222050172 is a `hidden beast` number, since 2 + 222 + 220 + 50 + 172 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222050173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83415354 + ... + 83418017.

Almost surely, 2^222222050172 is an apocalyptic number.

It is an amenable number.

222222050172 is an abundant number, since it is smaller than the sum of its proper divisors (354687750204).

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

222222050172 is a wasteful number, since it uses less digits than its factorization.

222222050172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166833418 (or 166833413 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

Adding to 222222050172 its reverse (271050222222), we get a palindrome (493272272394).

It can be divided in two parts, 222222050 and 172, that added together give a palindrome (222222222).

The spelling of 222222050172 in words is "two hundred twenty-two billion, two hundred twenty-two million, fifty thousand, one hundred seventy-two".