21470113 has 8 divisors (see below), whose sum is σ = 24755328. Its totient is φ = 18239424.

The previous prime is 21470081. The next prime is 21470123. The reversal of 21470113 is 31107412.

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

It is not a de Polignac number, because 21470113 - 2⁵ = 21470081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21470123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12781 + ... + 14362.

It is an arithmetic number, because the mean of its divisors is an integer number (3094416).

Almost surely, 2^21470113 is an apocalyptic number.

It is an amenable number.

21470113 is a deficient number, since it is larger than the sum of its proper divisors (3285215).

21470113 is a wasteful number, since it uses less digits than its factorization.

21470113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27263.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 21470113 is about 4633.5853288787. The cubic root of 21470113 is about 277.9359832238.

Adding to 21470113 its reverse (31107412), we get a palindrome (52577525).

The spelling of 21470113 in words is "twenty-one million, four hundred seventy thousand, one hundred thirteen".