203032010021 has 8 divisors (see below), whose sum is σ = 217103537304. Its totient is φ = 189196979200.

The previous prime is 203032010017. The next prime is 203032010033. The reversal of 203032010021 is 120010230302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 175321413796 + 27710596225 = 418714^2 + 166465^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 203032010021 - 2² = 203032010017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203032009978 and 203032010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203032010011) 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, 59122340 + ... + 59125773.

It is an arithmetic number, because the mean of its divisors is an integer number (27137942163).

Almost surely, 2^203032010021 is an apocalyptic number.

It is an amenable number.

203032010021 is a deficient number, since it is larger than the sum of its proper divisors (14071527283).

203032010021 is a wasteful number, since it uses less digits than its factorization.

203032010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118248231.

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

Adding to 203032010021 its reverse (120010230302), we get a palindrome (323042240323).

The spelling of 203032010021 in words is "two hundred three billion, thirty-two million, ten thousand, twenty-one".