221011331222 has 32 divisors (see below), whose sum is σ = 377417214720. Its totient is φ = 96082161120.

The previous prime is 221011331179. The next prime is 221011331263. The reversal of 221011331222 is 222133110122.

221011331222 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 = 221011331194 and 221011331203.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7536404 + ... + 7565672.

It is an arithmetic number, because the mean of its divisors is an integer number (11794287960).

Almost surely, 2^221011331222 is an apocalyptic number.

221011331222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221011331222 is a deficient number, since it is larger than the sum of its proper divisors (156405883498).

221011331222 is a wasteful number, since it uses less digits than its factorization.

221011331222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44228.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221011331222 its reverse (222133110122), we get a palindrome (443144441344).

The spelling of 221011331222 in words is "two hundred twenty-one billion, eleven million, three hundred thirty-one thousand, two hundred twenty-two".