222011155 has 4 divisors (see below), whose sum is σ = 266413392. Its totient is φ = 177608920.

The previous prime is 222011131. The next prime is 222011171. The reversal of 222011155 is 551110222.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 222011155 - 2¹¹ = 222009107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22201111 + ... + 22201120.

It is an arithmetic number, because the mean of its divisors is an integer number (66603348).

Almost surely, 2^222011155 is an apocalyptic number.

222011155 is a deficient number, since it is larger than the sum of its proper divisors (44402237).

222011155 is an equidigital number, since it uses as much as digits as its factorization.

222011155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44402236.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 222011155 is about 14900.0387583389. The cubic root of 222011155 is about 605.5150362337.

Adding to 222011155 its reverse (551110222), we get a palindrome (773121377).

The spelling of 222011155 in words is "two hundred twenty-two million, eleven thousand, one hundred fifty-five".