21110201 has 8 divisors (see below), whose sum is σ = 24182400. Its totient is φ = 18052128.

The previous prime is 21110189. The next prime is 21110227. The reversal of 21110201 is 10201112.

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 21110201 - 2¹⁰ = 21109177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110261) 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, 101 + ... + 6498.

It is an arithmetic number, because the mean of its divisors is an integer number (3022800).

Almost surely, 2^21110201 is an apocalyptic number.

It is an amenable number.

21110201 is a deficient number, since it is larger than the sum of its proper divisors (3072199).

21110201 is an equidigital number, since it uses as much as digits as its factorization.

21110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7063.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 21110201 is about 4594.5838766966. The cubic root of 21110201 is about 276.3741730688.

Adding to 21110201 its reverse (10201112), we get a palindrome (31311313).

The spelling of 21110201 in words is "twenty-one million, one hundred ten thousand, two hundred one".