5020217021 has 4 divisors (see below), whose sum is σ = 5038082844. Its totient is φ = 5002351200.

The previous prime is 5020217003. The next prime is 5020217053. The reversal of 5020217021 is 1207120205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1207120205 = 5 ⋅241424041.

It can be written as a sum of positive squares in 2 ways, for example, as 2471481796 + 2548735225 = 49714^2 + 50485^2 .

It is a cyclic number.

It is not a de Polignac number, because 5020217021 - 2²² = 5016022717 is a prime.

It is a super-2 number, since 2×5020217021² = 50405157875876228882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5020216984 and 5020217002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5020217821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8932490 + ... + 8933051.

It is an arithmetic number, because the mean of its divisors is an integer number (1259520711).

Almost surely, 2^5020217021 is an apocalyptic number.

It is an amenable number.

5020217021 is a deficient number, since it is larger than the sum of its proper divisors (17865823).

5020217021 is a wasteful number, since it uses less digits than its factorization.

5020217021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17865822.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 5020217021 is about 70853.4898293655. The cubic root of 5020217021 is about 1712.2775553220.

Adding to 5020217021 its reverse (1207120205), we get a palindrome (6227337226).

The spelling of 5020217021 in words is "five billion, twenty million, two hundred seventeen thousand, twenty-one".