122221122222 has 16 divisors (see below), whose sum is σ = 244562152320. Its totient is φ = 40720389432.

The previous prime is 122221122119. The next prime is 122221122259. The reversal of 122221122222 is 222221122221.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4982908 + ... + 5007375.

It is an arithmetic number, because the mean of its divisors is an integer number (15285134520).

Almost surely, 2^122221122222 is an apocalyptic number.

122221122222 is an abundant number, since it is smaller than the sum of its proper divisors (122341030098).

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

122221122222 is a wasteful number, since it uses less digits than its factorization.

122221122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9992327.

The product of its digits is 512, while the sum is 21.

Adding to 122221122222 its reverse (222221122221), we get a palindrome (344442244443).

Subtracting 122221122222 from its reverse (222221122221), we obtain a palindrome (99999999999).

The spelling of 122221122222 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".