10100243021 has 16 divisors (see below), whose sum is σ = 11380594176. Its totient is φ = 8880600000.

The previous prime is 10100242973. The next prime is 10100243029. The reversal of 10100243021 is 12034200101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10100243021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10100242987 and 10100243005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100243029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640451 + ... + 656031.

It is an arithmetic number, because the mean of its divisors is an integer number (711287136).

Almost surely, 2^10100243021 is an apocalyptic number.

10100243021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10100243021 is a deficient number, since it is larger than the sum of its proper divisors (1280351155).

10100243021 is a wasteful number, since it uses less digits than its factorization.

10100243021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17524.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10100243021 its reverse (12034200101), we get a palindrome (22134443122).

The spelling of 10100243021 in words is "ten billion, one hundred million, two hundred forty-three thousand, twenty-one".