221120222112 has 48 divisors (see below), whose sum is σ = 644933983680. Its totient is φ = 73706740416.

The previous prime is 221120222111. The next prime is 221120222117. The reversal of 221120222112 is 211222021122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (221120222111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127962228 + ... + 127963955.

It is an arithmetic number, because the mean of its divisors is an integer number (13436124660).

Almost surely, 2^221120222112 is an apocalyptic number.

It is an amenable number.

221120222112 is an abundant number, since it is smaller than the sum of its proper divisors (423813761568).

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

221120222112 is a wasteful number, since it uses less digits than its factorization.

221120222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255926202 (or 255926188 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221120222112 its reverse (211222021122), we get a palindrome (432342243234).

The spelling of 221120222112 in words is "two hundred twenty-one billion, one hundred twenty million, two hundred twenty-two thousand, one hundred twelve".