10103821 has 8 divisors (see below), whose sum is σ = 12435584. Its totient is φ = 7994160.

The previous prime is 10103783. The next prime is 10103833. The reversal of 10103821 is 12830101.

10103821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10103821 - 2⁹ = 10103309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10103795 and 10103804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10103851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55425 + ... + 55606.

It is an arithmetic number, because the mean of its divisors is an integer number (1554448).

Almost surely, 2^10103821 is an apocalyptic number.

It is an amenable number.

10103821 is a deficient number, since it is larger than the sum of its proper divisors (2331763).

10103821 is a wasteful number, since it uses less digits than its factorization.

10103821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111051.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 10103821 is about 3178.6508144180. The cubic root of 10103821 is about 216.1864887498.

Adding to 10103821 its reverse (12830101), we get a palindrome (22933922).

The spelling of 10103821 in words is "ten million, one hundred three thousand, eight hundred twenty-one".