10021100238 has 48 divisors (see below), whose sum is σ = 22436509056. Its totient is φ = 3229191360.

The previous prime is 10021100237. The next prime is 10021100281. The reversal of 10021100238 is 83200112001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 10021100238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021100237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 547320 + ... + 565332.

It is an arithmetic number, because the mean of its divisors is an integer number (467427272).

Almost surely, 2^10021100238 is an apocalyptic number.

10021100238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021100238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11218254528).

10021100238 is an abundant number, since it is smaller than the sum of its proper divisors (12415408818).

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

10021100238 is a wasteful number, since it uses less digits than its factorization.

10021100238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19049 (or 19046 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 10021100238 its reverse (83200112001), we get a palindrome (93221212239).

The spelling of 10021100238 in words is "ten billion, twenty-one million, one hundred thousand, two hundred thirty-eight".