222121122 has 16 divisors (see below), whose sum is σ = 444435552. Its totient is φ = 74008160.

The previous prime is 222121117. The next prime is 222121129. The reversal of 222121122 is 221121222.

222121122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222121129) 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, 9997 + ... + 23327.

It is an arithmetic number, because the mean of its divisors is an integer number (27777222).

Almost surely, 2^222121122 is an apocalyptic number.

222121122 is an abundant number, since it is smaller than the sum of its proper divisors (222314430).

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

222121122 is a wasteful number, since it uses less digits than its factorization.

222121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16113.

The product of its digits is 64, while the sum is 15.

The square root of 222121122 is about 14903.7284596842. The cubic root of 222121122 is about 605.6149946960.

Adding to 222121122 its reverse (221121222), we get a palindrome (443242344).

The spelling of 222121122 in words is "two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-two".