203150221 has 4 divisors (see below), whose sum is σ = 215100252. Its totient is φ = 191200192.

The previous prime is 203150197. The next prime is 203150263. The reversal of 203150221 is 122051302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 173054025 + 30096196 = 13155^2 + 5486^2 .

It is a cyclic number.

It is not a de Polignac number, because 203150221 - 2¹³ = 203142029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203150195 and 203150204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203150291) 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, 5974990 + ... + 5975023.

It is an arithmetic number, because the mean of its divisors is an integer number (53775063).

Almost surely, 2^203150221 is an apocalyptic number.

It is an amenable number.

203150221 is a deficient number, since it is larger than the sum of its proper divisors (11950031).

203150221 is a wasteful number, since it uses less digits than its factorization.

203150221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11950030.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 203150221 is about 14253.0775974875. The cubic root of 203150221 is about 587.8580003642.

The spelling of 203150221 in words is "two hundred three million, one hundred fifty thousand, two hundred twenty-one".