203224121 has 2 divisors, whose sum is σ = 203224122. Its totient is φ = 203224120.

The previous prime is 203224117. The next prime is 203224139. The reversal of 203224121 is 121422302.

203224121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145540096 + 57684025 = 12064^2 + 7595^2 .

It is a cyclic number.

It is not a de Polignac number, because 203224121 - 2² = 203224117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 203224121.

It is not a weakly prime, because it can be changed into another prime (203224111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101612060 + 101612061.

It is an arithmetic number, because the mean of its divisors is an integer number (101612061).

Almost surely, 2^203224121 is an apocalyptic number.

It is an amenable number.

203224121 is a deficient number, since it is larger than the sum of its proper divisors (1).

203224121 is an equidigital number, since it uses as much as digits as its factorization.

203224121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 203224121 is about 14255.6697843349. The cubic root of 203224121 is about 587.9292734667.

Adding to 203224121 its reverse (121422302), we get a palindrome (324646423).

The spelling of 203224121 in words is "two hundred three million, two hundred twenty-four thousand, one hundred twenty-one".