221838872222 has 16 divisors (see below), whose sum is σ = 367087820400. Its totient is φ = 99702863040.

The previous prime is 221838872221. The next prime is 221838872239. The reversal of 221838872222 is 222278838122.

221838872222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221838872221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56647397 + ... + 56651312.

It is an arithmetic number, because the mean of its divisors is an integer number (22942988775).

Almost surely, 2^221838872222 is an apocalyptic number.

221838872222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221838872222 is a deficient number, since it is larger than the sum of its proper divisors (145248948178).

221838872222 is a wasteful number, since it uses less digits than its factorization.

221838872222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113298811.

The product of its digits is 688128, while the sum is 47.

The spelling of 221838872222 in words is "two hundred twenty-one billion, eight hundred thirty-eight million, eight hundred seventy-two thousand, two hundred twenty-two".