203033132021 has 6 divisors (see below), whose sum is σ = 215678794530. Its totient is φ = 191090006336.

The previous prime is 203033132009. The next prime is 203033132077. The reversal of 203033132021 is 120231330302.

It can be written as a sum of positive squares in 3 ways, for example, as 34616463025 + 168416668996 = 186055^2 + 410386^2 .

It is not a de Polignac number, because 203033132021 - 2²⁶ = 202966023157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203033131984 and 203033132002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203033132221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 351268106 + ... + 351268683.

It is an arithmetic number, because the mean of its divisors is an integer number (35946465755).

Almost surely, 2^203033132021 is an apocalyptic number.

It is an amenable number.

203033132021 is a deficient number, since it is larger than the sum of its proper divisors (12645662509).

203033132021 is an equidigital number, since it uses as much as digits as its factorization.

203033132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702536823 (or 702536806 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203033132021 its reverse (120231330302), we get a palindrome (323264462323).

The spelling of 203033132021 in words is "two hundred three billion, thirty-three million, one hundred thirty-two thousand, twenty-one".