122221121220012 has 24 divisors (see below), whose sum is σ = 285193242611200. Its totient is φ = 40738855678416.

The previous prime is 122221121220001. The next prime is 122221121220047. The reversal of 122221121220012 is 210022121122221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189422212 + ... + 190066347.

Almost surely, 2^{122221121220012} is an apocalyptic number.

122221121220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122221121220012 is an abundant number, since it is smaller than the sum of its proper divisors (162972121391188).

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

122221121220012 is a wasteful number, since it uses less digits than its factorization.

122221121220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379515405 (or 379515403 counting only the distinct ones).

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

Adding to 122221121220012 its reverse (210022121122221), we get a palindrome (332243242342233).

The spelling of 122221121220012 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred twenty thousand, twelve".