122220451212 has 24 divisors (see below), whose sum is σ = 285224914800. Its totient is φ = 40733884416.

The previous prime is 122220451207. The next prime is 122220451247. The reversal of 122220451212 is 212154022221.

It is a happy number.

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, 701637 + ... + 858332.

It is an arithmetic number, because the mean of its divisors is an integer number (11884371450).

Almost surely, 2^122220451212 is an apocalyptic number.

122220451212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122220451212 is an abundant number, since it is smaller than the sum of its proper divisors (163004463588).

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

122220451212 is a wasteful number, since it uses less digits than its factorization.

122220451212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566505 (or 1566503 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 122220451212 its reverse (212154022221), we get a palindrome (334374473433).

The spelling of 122220451212 in words is "one hundred twenty-two billion, two hundred twenty million, four hundred fifty-one thousand, two hundred twelve".