122112222220 has 24 divisors (see below), whose sum is σ = 256849966800. Its totient is φ = 48765974592.

The previous prime is 122112222103. The next prime is 122112222259. The reversal of 122112222220 is 22222211221.

It is a super-2 number, since 2×122112222220² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4919455 + ... + 4944214.

It is an arithmetic number, because the mean of its divisors is an integer number (10702081950).

Almost surely, 2^122112222220 is an apocalyptic number.

122112222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122112222220 is an abundant number, since it is smaller than the sum of its proper divisors (134737744580).

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

122112222220 is a wasteful number, since it uses less digits than its factorization.

122112222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9864297 (or 9864295 counting only the distinct ones).

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

Adding to 122112222220 its reverse (22222211221), we get a palindrome (144334433441).

The spelling of 122112222220 in words is "one hundred twenty-two billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty".