100120001212000 has 768 divisors, whose sum is σ = 341827438417920. Its totient is φ = 27824726016000.

The previous prime is 100120001211977. The next prime is 100120001212003. The reversal of 100120001212000 is 212100021001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120001212003) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 98980804 + ... + 99987196.

It is an arithmetic number, because the mean of its divisors is an integer number (445087810440).

Almost surely, 2^{100120001212000} is an apocalyptic number.

100120001212000 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 100120001212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170913719208960).

100120001212000 is an abundant number, since it is smaller than the sum of its proper divisors (241707437205920).

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

100120001212000 is a wasteful number, since it uses less digits than its factorization.

100120001212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006472 (or 1006454 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100120001212000 its reverse (212100021001), we get a palindrome (100332101233001).

The spelling of 100120001212000 in words is "one hundred trillion, one hundred twenty billion, one million, two hundred twelve thousand".