5203212021 has 24 divisors (see below), whose sum is σ = 8707100480. Its totient is φ = 2932531776.

The previous prime is 5203212013. The next prime is 5203212023. The reversal of 5203212021 is 1202123025.

5203212021 is a `hidden beast` number, since 520 + 3 + 2 + 120 + 21 = 666.

It is not a de Polignac number, because 5203212021 - 2³ = 5203212013 is a prime.

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 = 5203211985 and 5203212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5203212023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 561091 + ... + 570288.

Almost surely, 2^5203212021 is an apocalyptic number.

It is an amenable number.

5203212021 is a deficient number, since it is larger than the sum of its proper divisors (3503888459).

5203212021 is a wasteful number, since it uses less digits than its factorization.

5203212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131465 (or 1131462 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 5203212021 is about 72133.2934295946. The cubic root of 5203212021 is about 1732.8348524133.

Adding to 5203212021 its reverse (1202123025), we get a palindrome (6405335046).

The spelling of 5203212021 in words is "five billion, two hundred three million, two hundred twelve thousand, twenty-one".