172222222222222 has 16 divisors (see below), whose sum is σ = 269587759034880. Its totient is φ = 82360262034072.

The previous prime is 172222222222207. The next prime is 172222222222247. The reversal of 172222222222222 is 222222222222271.

172222222222222 is a modest number, since divided by 22222222 gives 1722222 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155983098 + ... + 157083325.

It is an arithmetic number, because the mean of its divisors is an integer number (16849234939680).

Almost surely, 2^{172222222222222} is an apocalyptic number.

172222222222222 is a deficient number, since it is larger than the sum of its proper divisors (97365536812658).

172222222222222 is a wasteful number, since it uses less digits than its factorization.

172222222222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313078407.

The product of its digits is 57344, while the sum is 34.

Adding to 172222222222222 its reverse (222222222222271), we get a palindrome (394444444444493).

The spelling of 172222222222222 in words is "one hundred seventy-two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".