7220222 has 4 divisors (see below), whose sum is σ = 10830336. Its totient is φ = 3610110.

The previous prime is 7220219. The next prime is 7220231. The reversal of 7220222 is 2220227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2220227 = 673 ⋅3299.

It is a self number, because there is not a number n which added to its sum of digits gives 7220222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805054 + ... + 1805057.

It is an arithmetic number, because the mean of its divisors is an integer number (2707584).

Almost surely, 2^7220222 is an apocalyptic number.

7220222 is a deficient number, since it is larger than the sum of its proper divisors (3610114).

7220222 is a wasteful number, since it uses less digits than its factorization.

7220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610113.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 7220222 is about 2687.0470781138. The cubic root of 7220222 is about 193.2784868863.

Adding to 7220222 its reverse (2220227), we get a palindrome (9440449).

The spelling of 7220222 in words is "seven million, two hundred twenty thousand, two hundred twenty-two".