7021222 has 32 divisors (see below), whose sum is σ = 12186720. Its totient is φ = 3006720.

The previous prime is 7021211. The next prime is 7021229. The reversal of 7021222 is 2221207.

It is a junction number, because it is equal to n+sod(n) for n = 7021196 and 7021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7021229) 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 in 15 ways as a sum of consecutive naturals, for example, 30018 + ... + 30250.

It is an arithmetic number, because the mean of its divisors is an integer number (380835).

Almost surely, 2^7021222 is an apocalyptic number.

7021222 is a deficient number, since it is larger than the sum of its proper divisors (5165498).

7021222 is a wasteful number, since it uses less digits than its factorization.

7021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 7021222 is about 2649.7588569528. The cubic root of 7021222 is about 191.4862386064.

Adding to 7021222 its reverse (2221207), we get a palindrome (9242429).

The spelling of 7021222 in words is "seven million, twenty-one thousand, two hundred twenty-two".