5021105421 has 4 divisors (see below), whose sum is σ = 6694807232. Its totient is φ = 3347403612.

The previous prime is 5021105407. The next prime is 5021105423. The reversal of 5021105421 is 1245011205.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5021105421 - 2⁷ = 5021105293 is a prime.

It is a super-2 number, since 2×5021105421² = 50422999297591174482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5021105423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836850901 + ... + 836850906.

It is an arithmetic number, because the mean of its divisors is an integer number (1673701808).

Almost surely, 2^5021105421 is an apocalyptic number.

It is an amenable number.

5021105421 is a deficient number, since it is larger than the sum of its proper divisors (1673701811).

5021105421 is a wasteful number, since it uses less digits than its factorization.

5021105421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673701810.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 5021105421 is about 70859.7588268546. The cubic root of 5021105421 is about 1712.3785534562.

Adding to 5021105421 its reverse (1245011205), we get a palindrome (6266116626).

The spelling of 5021105421 in words is "five billion, twenty-one million, one hundred five thousand, four hundred twenty-one".