7026221 has 4 divisors (see below), whose sum is σ = 7071132. Its totient is φ = 6981312.

The previous prime is 7026209. The next prime is 7026233. The reversal of 7026221 is 1226207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1226207 = 29 ⋅42283.

It is an interprime number because it is at equal distance from previous prime (7026209) and next prime (7026233).

It can be written as a sum of positive squares in 2 ways, for example, as 2208196 + 4818025 = 1486^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 7026221 - 2¹⁰ = 7025197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7026193 and 7026202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7026241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22220 + ... + 22533.

It is an arithmetic number, because the mean of its divisors is an integer number (1767783).

Almost surely, 2^7026221 is an apocalyptic number.

It is an amenable number.

7026221 is a deficient number, since it is larger than the sum of its proper divisors (44911).

7026221 is a wasteful number, since it uses less digits than its factorization.

7026221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44910.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 7026221 is about 2650.7019824944. The cubic root of 7026221 is about 191.5316728920.

The spelling of 7026221 in words is "seven million, twenty-six thousand, two hundred twenty-one".