122221112000 has 224 divisors, whose sum is σ = 326828261760. Its totient is φ = 45008179200.

The previous prime is 122221111997. The next prime is 122221112011. The reversal of 122221112000 is 211122221.

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 31 ways as a sum of consecutive naturals, for example, 45654662 + ... + 45657338.

It is an arithmetic number, because the mean of its divisors is an integer number (1459054740).

Almost surely, 2^122221112000 is an apocalyptic number.

122221112000 is a gapful number since it is divisible by the number (10) 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 122221112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163414130880).

122221112000 is an abundant number, since it is smaller than the sum of its proper divisors (204607149760).

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

122221112000 is a wasteful number, since it uses less digits than its factorization.

122221112000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156 (or 3136 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 122221112000 its reverse (211122221), we get a palindrome (122432234221).

The spelling of 122221112000 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred twelve thousand".