221012203 has 4 divisors (see below), whose sum is σ = 221066928. Its totient is φ = 220957480.

The previous prime is 221012201. The next prime is 221012227. The reversal of 221012203 is 302210122.

221012203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221012203 - 2¹ = 221012201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012201) 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, 20776 + ... + 29557.

It is an arithmetic number, because the mean of its divisors is an integer number (55266732).

Almost surely, 2^221012203 is an apocalyptic number.

221012203 is a deficient number, since it is larger than the sum of its proper divisors (54725).

221012203 is an equidigital number, since it uses as much as digits as its factorization.

221012203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54724.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 221012203 is about 14866.4791729582. The cubic root of 221012203 is about 604.6054873979.

Adding to 221012203 its reverse (302210122), we get a palindrome (523222325).

The spelling of 221012203 in words is "two hundred twenty-one million, twelve thousand, two hundred three".