222166211011155 has 48 divisors (see below), whose sum is σ = 407780752710240. Its totient is φ = 111507672536064.

The previous prime is 222166211011153. The next prime is 222166211011183. The reversal of 222166211011155 is 551110112661222.

222166211011155 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 6 + 621 + 1 + 0 + 11 + 15 + 5 = 666.

It is not a de Polignac number, because 222166211011155 - 2¹ = 222166211011153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222166211011153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6665725 + ... + 22108014.

It is an arithmetic number, because the mean of its divisors is an integer number (8495432348130).

Almost surely, 2^{222166211011155} is an apocalyptic number.

222166211011155 is a deficient number, since it is larger than the sum of its proper divisors (185614541699085).

222166211011155 is a wasteful number, since it uses less digits than its factorization.

222166211011155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28783860 (or 28783857 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

Adding to 222166211011155 its reverse (551110112661222), we get a palindrome (773276323672377).

The spelling of 222166211011155 in words is "two hundred twenty-two trillion, one hundred sixty-six billion, two hundred eleven million, eleven thousand, one hundred fifty-five".