7022621 has 2 divisors, whose sum is σ = 7022622. Its totient is φ = 7022620.

The previous prime is 7022597. The next prime is 7022627. The reversal of 7022621 is 1262207.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7022500 + 121 = 2650^2 + 11^2 .

It is an emirp because it is prime and its reverse (1262207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7022621 - 2¹⁸ = 6760477 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7022593 and 7022602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7022627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3511310 + 3511311.

It is an arithmetic number, because the mean of its divisors is an integer number (3511311).

Almost surely, 2^7022621 is an apocalyptic number.

It is an amenable number.

7022621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7022621 is an equidigital number, since it uses as much as digits as its factorization.

7022621 is an odious number, because the sum of its binary digits is odd.

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

The square root of 7022621 is about 2650.0228300903. The cubic root of 7022621 is about 191.4989558351.

Adding to 7022621 its reverse (1262207), we get a palindrome (8284828).

The spelling of 7022621 in words is "seven million, twenty-two thousand, six hundred twenty-one".