22223217 has 16 divisors (see below), whose sum is σ = 31919360. Its totient is φ = 13707792.

The previous prime is 22223207. The next prime is 22223219. The reversal of 22223217 is 71232222.

It is a happy number.

It is not a de Polignac number, because 22223217 - 2¹² = 22219121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22223193 and 22223202.

It is not an unprimeable number, because it can be changed into a prime (22223219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2083 + ... + 6984.

It is an arithmetic number, because the mean of its divisors is an integer number (1994960).

Almost surely, 2^22223217 is an apocalyptic number.

It is an amenable number.

22223217 is a deficient number, since it is larger than the sum of its proper divisors (9696143).

22223217 is a wasteful number, since it uses less digits than its factorization.

22223217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9132.

The product of its digits is 672, while the sum is 21.

The square root of 22223217 is about 4714.1507188464. The cubic root of 22223217 is about 281.1484168450.

Adding to 22223217 its reverse (71232222), we get a palindrome (93455439).

The spelling of 22223217 in words is "twenty-two million, two hundred twenty-three thousand, two hundred seventeen".