100121102110000 has 400 divisors, whose sum is σ = 256252013107200. Its totient is φ = 37778856192000.

The previous prime is 100121102109997. The next prime is 100121102110009. The reversal of 100121102110000 is 11201121001.

It is a tau number, because it is divible by the number of its divisors (400).

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

It is not an unprimeable number, because it can be changed into a prime (100121102110009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 56153169109 + ... + 56153170891.

It is an arithmetic number, because the mean of its divisors is an integer number (640630032768).

Almost surely, 2^{100121102110000} is an apocalyptic number.

100121102110000 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 100121102110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128126006553600).

100121102110000 is an abundant number, since it is smaller than the sum of its proper divisors (156130910997200).

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

100121102110000 is a wasteful number, since it uses less digits than its factorization.

100121102110000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926 (or 2905 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100121102110000 its reverse (11201121001), we get a palindrome (100132303231001).

The spelling of 100121102110000 in words is "one hundred trillion, one hundred twenty-one billion, one hundred two million, one hundred ten thousand".