221226010105166 has 16 divisors (see below), whose sum is σ = 362016688577328. Its totient is φ = 100554363369600.

The previous prime is 221226010105157. The next prime is 221226010105169. The reversal of 221226010105166 is 661501010622122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221226010105169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144921005 + ... + 146439576.

It is an arithmetic number, because the mean of its divisors is an integer number (22626043036083).

Almost surely, 2^{221226010105166} is an apocalyptic number.

221226010105166 is a deficient number, since it is larger than the sum of its proper divisors (140790678472162).

221226010105166 is a wasteful number, since it uses less digits than its factorization.

221226010105166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291395107.

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 221226010105166 its reverse (661501010622122), we get a palindrome (882727020727288).

The spelling of 221226010105166 in words is "two hundred twenty-one trillion, two hundred twenty-six billion, ten million, one hundred five thousand, one hundred sixty-six".