221102152166 has 16 divisors (see below), whose sum is σ = 381149763840. Its totient is φ = 94228689480.

The previous prime is 221102152157. The next prime is 221102152169. The reversal of 221102152166 is 661251201122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102152169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44112050 + ... + 44117061.

It is an arithmetic number, because the mean of its divisors is an integer number (23821860240).

Almost surely, 2^221102152166 is an apocalyptic number.

221102152166 is a deficient number, since it is larger than the sum of its proper divisors (160047611674).

221102152166 is a wasteful number, since it uses less digits than its factorization.

221102152166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88229299.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 221102152166 its reverse (661251201122), we get a palindrome (882353353288).

The spelling of 221102152166 in words is "two hundred twenty-one billion, one hundred two million, one hundred fifty-two thousand, one hundred sixty-six".