221212100210222 has 32 divisors (see below), whose sum is σ = 372036632670720. Its totient is φ = 97796394146880.

The previous prime is 221212100210197. The next prime is 221212100210237. The reversal of 221212100210222 is 222012001212122.

221212100210222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221212100210194 and 221212100210203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949731983 + ... + 949964874.

It is an arithmetic number, because the mean of its divisors is an integer number (11626144770960).

Almost surely, 2^{221212100210222} is an apocalyptic number.

221212100210222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221212100210222 is a deficient number, since it is larger than the sum of its proper divisors (150824532460498).

221212100210222 is a wasteful number, since it uses less digits than its factorization.

221212100210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899697016.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221212100210222 its reverse (222012001212122), we get a palindrome (443224101422344).

The spelling of 221212100210222 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred million, two hundred ten thousand, two hundred twenty-two".