203001221213 has 16 divisors (see below), whose sum is σ = 237884446080. Its totient is φ = 169630583616.

The previous prime is 203001221209. The next prime is 203001221261. The reversal of 203001221213 is 312122100302.

203001221213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 203001221213 - 2² = 203001221209 is a prime.

It is a super-2 number, since 2×203001221213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203001221191 and 203001221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203001221113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1684343 + ... + 1800836.

It is an arithmetic number, because the mean of its divisors is an integer number (14867777880).

Almost surely, 2^203001221213 is an apocalyptic number.

It is an amenable number.

203001221213 is a deficient number, since it is larger than the sum of its proper divisors (34883224867).

203001221213 is a wasteful number, since it uses less digits than its factorization.

203001221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485396.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 203001221213 its reverse (312122100302), we get a palindrome (515123321515).

The spelling of 203001221213 in words is "two hundred three billion, one million, two hundred twenty-one thousand, two hundred thirteen".