100001222112000 has 576 divisors, whose sum is σ = 368491635832320. Its totient is φ = 23831812096000.

The previous prime is 100001222111983. The next prime is 100001222112163. The reversal of 100001222112000 is 211222100001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61501474 + ... + 63106526.

It is an arithmetic number, because the mean of its divisors is an integer number (639742423320).

Almost surely, 2^{100001222112000} is an apocalyptic number.

100001222112000 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 100001222112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184245817916160).

100001222112000 is an abundant number, since it is smaller than the sum of its proper divisors (268490413720320).

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

100001222112000 is a wasteful number, since it uses less digits than its factorization.

100001222112000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605157 (or 1605133 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100001222112000 its reverse (211222100001), we get a palindrome (100212444212001).

The spelling of 100001222112000 in words is "one hundred trillion, one billion, two hundred twenty-two million, one hundred twelve thousand".