122221221120012 has 24 divisors (see below), whose sum is σ = 325923256320256. Its totient is φ = 34920348891408.

The previous prime is 122221221119909. The next prime is 122221221120017. The reversal of 122221221120012 is 210021122122221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (122221221120017) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 727507268488 + ... + 727507268655.

Almost surely, 2^{122221221120012} is an apocalyptic number.

122221221120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122221221120012 is an abundant number, since it is smaller than the sum of its proper divisors (203702035200244).

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

122221221120012 is a wasteful number, since it uses less digits than its factorization.

122221221120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455014537157 (or 1455014537155 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 122221221120012 its reverse (210021122122221), we get a palindrome (332242343242233).

The spelling of 122221221120012 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, twelve".