21110230 has 8 divisors (see below), whose sum is σ = 37998432. Its totient is φ = 8444088.

The previous prime is 21110227. The next prime is 21110233. The reversal of 21110230 is 3201112.

It is an interprime number because it is at equal distance from previous prime (21110227) and next prime (21110233).

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 2111023 = 21110230 / (2 + 1 + 1 + 1 + 0 + 2 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055502 + ... + 1055521.

It is an arithmetic number, because the mean of its divisors is an integer number (4749804).

Almost surely, 2^21110230 is an apocalyptic number.

21110230 is a deficient number, since it is larger than the sum of its proper divisors (16888202).

21110230 is a wasteful number, since it uses less digits than its factorization.

21110230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111030.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 21110230 is about 4594.5870325852. The cubic root of 21110230 is about 276.3742996245.

Adding to 21110230 its reverse (3201112), we get a palindrome (24311342).

The spelling of 21110230 in words is "twenty-one million, one hundred ten thousand, two hundred thirty".