203030021213 has 12 divisors (see below), whose sum is σ = 209829129984. Its totient is φ = 196444625400.

The previous prime is 203030021197. The next prime is 203030021239. The reversal of 203030021213 is 312120030302.

It is not a de Polignac number, because 203030021213 - 2⁴ = 203030021197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203030021191 and 203030021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203030021263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6290948 + ... + 6323138.

It is an arithmetic number, because the mean of its divisors is an integer number (17485760832).

Almost surely, 2^203030021213 is an apocalyptic number.

It is an amenable number.

203030021213 is a deficient number, since it is larger than the sum of its proper divisors (6799108771).

203030021213 is an equidigital number, since it uses as much as digits as its factorization.

203030021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38816 (or 38785 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 203030021213 its reverse (312120030302), we get a palindrome (515150051515).

The spelling of 203030021213 in words is "two hundred three billion, thirty million, twenty-one thousand, two hundred thirteen".