10203221 has 16 divisors (see below), whose sum is σ = 12038400. Its totient is φ = 8643600.

The previous prime is 10203211. The next prime is 10203223. The reversal of 10203221 is 12230201.

It is a happy number.

10203221 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10203221 - 2¹⁸ = 9941077 is a prime.

It is a Duffinian number.

10203221 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51695 + ... + 51891.

It is an arithmetic number, because the mean of its divisors is an integer number (752400).

Almost surely, 2^10203221 is an apocalyptic number.

It is an amenable number.

10203221 is a deficient number, since it is larger than the sum of its proper divisors (1835179).

10203221 is an equidigital number, since it uses as much as digits as its factorization.

10203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 10203221 is about 3194.2481118410. The cubic root of 10203221 is about 216.8931142009.

Adding to 10203221 its reverse (12230201), we get a palindrome (22433422).

The spelling of 10203221 in words is "ten million, two hundred three thousand, two hundred twenty-one".