221221120222 has 8 divisors (see below), whose sum is σ = 331989777000. Its totient is φ = 110557861224.

The previous prime is 221221120217. The next prime is 221221120229. The reversal of 221221120222 is 222021122122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 221221120222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221221120229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26344197 + ... + 26352592.

It is an arithmetic number, because the mean of its divisors is an integer number (41498722125).

Almost surely, 2^221221120222 is an apocalyptic number.

221221120222 is a deficient number, since it is larger than the sum of its proper divisors (110768656778).

221221120222 is a wasteful number, since it uses less digits than its factorization.

221221120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52698890.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221221120222 its reverse (222021122122), we get a palindrome (443242242344).

The spelling of 221221120222 in words is "two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twenty-two".