221013203 has 2 divisors, whose sum is σ = 221013204. Its totient is φ = 221013202.

The previous prime is 221013193. The next prime is 221013217. The reversal of 221013203 is 302310122.

It is a happy number.

221013203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (221013217) can be obtained adding 221013203 to its sum of digits (14).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221013203 - 2¹⁰ = 221012179 is a prime.

It is not a weakly prime, because it can be changed into another prime (221013253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506601 + 110506602.

It is an arithmetic number, because the mean of its divisors is an integer number (110506602).

Almost surely, 2^221013203 is an apocalyptic number.

221013203 is a deficient number, since it is larger than the sum of its proper divisors (1).

221013203 is an equidigital number, since it uses as much as digits as its factorization.

221013203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221013203 is about 14866.5128056313. The cubic root of 221013203 is about 604.6063992700.

Adding to 221013203 its reverse (302310122), we get a palindrome (523323325).

The spelling of 221013203 in words is "two hundred twenty-one million, thirteen thousand, two hundred three".