100120211121208 has 8 divisors (see below), whose sum is σ = 187725395852280. Its totient is φ = 50060105560600.

The previous prime is 100120211121191. The next prime is 100120211121209. The reversal of 100120211121208 is 802121112021001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120211121209) 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 as a sum of consecutive naturals, namely, 6257513195068 + ... + 6257513195083.

It is an arithmetic number, because the mean of its divisors is an integer number (23465674481535).

Almost surely, 2^{100120211121208} is an apocalyptic number.

It is an amenable number.

100120211121208 is a deficient number, since it is larger than the sum of its proper divisors (87605184731072).

100120211121208 is a wasteful number, since it uses less digits than its factorization.

100120211121208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12515026390157 (or 12515026390153 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 100120211121208 its reverse (802121112021001), we get a palindrome (902241323142209).

The spelling of 100120211121208 in words is "one hundred trillion, one hundred twenty billion, two hundred eleven million, one hundred twenty-one thousand, two hundred eight".