5011221 has 4 divisors (see below), whose sum is σ = 6681632. Its totient is φ = 3340812.

The previous prime is 5011213. The next prime is 5011249. The reversal of 5011221 is 1221105.

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 5011221 - 2³ = 5011213 is a prime.

It is a super-2 number, since 2×5011221² = 50224671821682, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5011197 and 5011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5011261) 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, 835201 + ... + 835206.

It is an arithmetic number, because the mean of its divisors is an integer number (1670408).

Almost surely, 2^5011221 is an apocalyptic number.

It is an amenable number.

5011221 is a deficient number, since it is larger than the sum of its proper divisors (1670411).

5011221 is a wasteful number, since it uses less digits than its factorization.

5011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670410.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 5011221 is about 2238.5756632287. The cubic root of 5011221 is about 171.1254166966.

Adding to 5011221 its reverse (1221105), we get a palindrome (6232326).

The spelling of 5011221 in words is "five million, eleven thousand, two hundred twenty-one".