203201030021 has 16 divisors (see below), whose sum is σ = 222811966080. Its totient is φ = 183782086080.

The previous prime is 203201029981. The next prime is 203201030033. The reversal of 203201030021 is 120030102302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 203201030021 - 2¹⁴ = 203201013637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203201029978 and 203201030005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203201030321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1717640 + ... + 1832126.

It is an arithmetic number, because the mean of its divisors is an integer number (13925747880).

Almost surely, 2^203201030021 is an apocalyptic number.

It is an amenable number.

203201030021 is a deficient number, since it is larger than the sum of its proper divisors (19610936059).

203201030021 is a wasteful number, since it uses less digits than its factorization.

203201030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115324.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 203201030021 its reverse (120030102302), we get a palindrome (323231132323).

The spelling of 203201030021 in words is "two hundred three billion, two hundred one million, thirty thousand, twenty-one".