100121144 has 32 divisors (see below), whose sum is σ = 190512000. Its totient is φ = 49324512.

The previous prime is 100121141. The next prime is 100121159. The reversal of 100121144 is 441121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 198797 + ... + 199299.

It is an arithmetic number, because the mean of its divisors is an integer number (5953500).

Almost surely, 2^100121144 is an apocalyptic number.

It is an amenable number.

100121144 is a deficient number, since it is larger than the sum of its proper divisors (90390856).

100121144 is a wasteful number, since it uses less digits than its factorization.

100121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 823 counting only the distinct ones).

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

The square root of 100121144 is about 10006.0553666268. The cubic root of 100121144 is about 464.3462412699.

Adding to 100121144 its reverse (441121001), we get a palindrome (541242145).

The spelling of 100121144 in words is "one hundred million, one hundred twenty-one thousand, one hundred forty-four".