5021233621 has 4 divisors (see below), whose sum is σ = 5115973932. Its totient is φ = 4926493312.

The previous prime is 5021233583. The next prime is 5021233643. The reversal of 5021233621 is 1263321205.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2429405521 + 2591828100 = 49289^2 + 50910^2 .

It is not a de Polignac number, because 5021233621 - 2²⁷ = 4887015893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5021243621) 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, 47370076 + ... + 47370181.

It is an arithmetic number, because the mean of its divisors is an integer number (1278993483).

Almost surely, 2^5021233621 is an apocalyptic number.

It is an amenable number.

5021233621 is a deficient number, since it is larger than the sum of its proper divisors (94740311).

5021233621 is an equidigital number, since it uses as much as digits as its factorization.

5021233621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94740310.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 5021233621 is about 70860.6634247803. The cubic root of 5021233621 is about 1712.3931269444.

Adding to 5021233621 its reverse (1263321205), we get a palindrome (6284554826).

The spelling of 5021233621 in words is "five billion, twenty-one million, two hundred thirty-three thousand, six hundred twenty-one".