7212223 has 4 divisors (see below), whose sum is σ = 7221928. Its totient is φ = 7202520.

The previous prime is 7212211. The next prime is 7212239. The reversal of 7212223 is 3222127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3222127 = 223 ⋅14449.

It is a cyclic number.

It is not a de Polignac number, because 7212223 - 2¹³ = 7204031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7212223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212253) 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, 3636 + ... + 5257.

It is an arithmetic number, because the mean of its divisors is an integer number (1805482).

Almost surely, 2^7212223 is an apocalyptic number.

7212223 is a deficient number, since it is larger than the sum of its proper divisors (9705).

7212223 is an equidigital number, since it uses as much as digits as its factorization.

7212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9704.

The product of its digits is 336, while the sum is 19.

The square root of 7212223 is about 2685.5582287487. The cubic root of 7212223 is about 193.2070853007.

The spelling of 7212223 in words is "seven million, two hundred twelve thousand, two hundred twenty-three".