122212212012 has 144 divisors (see below), whose sum is σ = 340567718400. Its totient is φ = 36644918400.

The previous prime is 122212212007. The next prime is 122212212037. The reversal of 122212212012 is 210212212221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15986263 + ... + 15993905.

It is an arithmetic number, because the mean of its divisors is an integer number (2365053600).

Almost surely, 2^122212212012 is an apocalyptic number.

122212212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122212212012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170283859200).

122212212012 is an abundant number, since it is smaller than the sum of its proper divisors (218355506388).

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

122212212012 is a wasteful number, since it uses less digits than its factorization.

122212212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084 (or 8079 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122212212012 its reverse (210212212221), we get a palindrome (332424424233).

The spelling of 122212212012 in words is "one hundred twenty-two billion, two hundred twelve million, two hundred twelve thousand, twelve".