203222121 has 8 divisors (see below), whose sum is σ = 271768224. Its totient is φ = 135078720.

The previous prime is 203222113. The next prime is 203222141. The reversal of 203222121 is 121222302.

It is a happy number.

203222121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203222121 - 2³ = 203222113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203222121.

It is not an unprimeable number, because it can be changed into a prime (203222141) 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, 99495 + ... + 101516.

It is an arithmetic number, because the mean of its divisors is an integer number (33971028).

Almost surely, 2^203222121 is an apocalyptic number.

It is an amenable number.

203222121 is a deficient number, since it is larger than the sum of its proper divisors (68546103).

203222121 is a wasteful number, since it uses less digits than its factorization.

203222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201351.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 203222121 is about 14255.5996366340. The cubic root of 203222121 is about 587.9273447875.

Adding to 203222121 its reverse (121222302), we get a palindrome (324444423).

The spelling of 203222121 in words is "two hundred three million, two hundred twenty-two thousand, one hundred twenty-one".