221212044222 has 32 divisors (see below), whose sum is σ = 478951280640. Its totient is φ = 67708877280.

The previous prime is 221212044197. The next prime is 221212044269. The reversal of 221212044222 is 222440212122.

It is a junction number, because it is equal to n+sod(n) for n = 221212044192 and 221212044201.

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, 7409322 + ... + 7439117.

It is an arithmetic number, because the mean of its divisors is an integer number (14967227520).

Almost surely, 2^221212044222 is an apocalyptic number.

221212044222 is an abundant number, since it is smaller than the sum of its proper divisors (257739236418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221212044222 is a wasteful number, since it uses less digits than its factorization.

221212044222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14848648.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 221212044222 its reverse (222440212122), we get a palindrome (443652256344).

The spelling of 221212044222 in words is "two hundred twenty-one billion, two hundred twelve million, forty-four thousand, two hundred twenty-two".