10121440208 has 20 divisors (see below), whose sum is σ = 21393044448. Its totient is φ = 4600654560.

The previous prime is 10121440207. The next prime is 10121440223. The reversal of 10121440208 is 80204412101.

10121440208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121440207) 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 3 ways as a sum of consecutive naturals, for example, 28753916 + ... + 28754267.

Almost surely, 2^10121440208 is an apocalyptic number.

It is an amenable number.

10121440208 is an abundant number, since it is smaller than the sum of its proper divisors (11271604240).

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

10121440208 is a wasteful number, since it uses less digits than its factorization.

10121440208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57508202 (or 57508196 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 10121440208 its reverse (80204412101), we get a palindrome (90325852309).

The spelling of 10121440208 in words is "ten billion, one hundred twenty-one million, four hundred forty thousand, two hundred eight".