122012211220 has 48 divisors (see below), whose sum is σ = 260619871680. Its totient is φ = 47968216064.

The previous prime is 122012211187. The next prime is 122012211221. The reversal of 122012211220 is 22112210221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122012211194 and 122012211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122012211221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11059347 + ... + 11070373.

It is an arithmetic number, because the mean of its divisors is an integer number (5429580660).

Almost surely, 2^122012211220 is an apocalyptic number.

122012211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122012211220 is an abundant number, since it is smaller than the sum of its proper divisors (138607660460).

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

122012211220 is a wasteful number, since it uses less digits than its factorization.

122012211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20472 (or 20470 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122012211220 its reverse (22112210221), we get a palindrome (144124421441).

Subtracting from 122012211220 its reverse (22112210221), we obtain a palindrome (99900000999).

The spelling of 122012211220 in words is "one hundred twenty-two billion, twelve million, two hundred eleven thousand, two hundred twenty".