221022100222 has 16 divisors (see below), whose sum is σ = 413340031872. Its totient is φ = 86112506520.

The previous prime is 221022100193. The next prime is 221022100331. The reversal of 221022100222 is 222001220122.

It is a junction number, because it is equal to n+sod(n) for n = 221022100196 and 221022100205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717604068 + ... + 717604375.

It is an arithmetic number, because the mean of its divisors is an integer number (25833751992).

Almost surely, 2^221022100222 is an apocalyptic number.

221022100222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221022100222 is a deficient number, since it is larger than the sum of its proper divisors (192317931650).

221022100222 is a wasteful number, since it uses less digits than its factorization.

221022100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435208463.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221022100222 its reverse (222001220122), we get a palindrome (443023320344).

The spelling of 221022100222 in words is "two hundred twenty-one billion, twenty-two million, one hundred thousand, two hundred twenty-two".