10021913 has 8 divisors (see below), whose sum is σ = 10958880. Its totient is φ = 9089280.

The previous prime is 10021909. The next prime is 10021933. The reversal of 10021913 is 31912001.

It is a happy number.

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 10021913 - 2² = 10021909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021891 and 10021900.

It is not an unprimeable number, because it can be changed into a prime (10021933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5558 + ... + 7136.

It is an arithmetic number, because the mean of its divisors is an integer number (1369860).

Almost surely, 2^10021913 is an apocalyptic number.

It is an amenable number.

10021913 is a deficient number, since it is larger than the sum of its proper divisors (936967).

10021913 is a wasteful number, since it uses less digits than its factorization.

10021913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 10021913 is about 3165.7405136871. The cubic root of 10021913 is about 215.6007212880.

Adding to 10021913 its reverse (31912001), we get a palindrome (41933914).

The spelling of 10021913 in words is "ten million, twenty-one thousand, nine hundred thirteen".