22213474 has 4 divisors (see below), whose sum is σ = 33320214. Its totient is φ = 11106736.

The previous prime is 22213463. The next prime is 22213481. The reversal of 22213474 is 47431222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47431222 = 2 ⋅23715611.

It can be written as a sum of positive squares in only one way, i.e., 22024249 + 189225 = 4693^2 + 435^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5553367 + ... + 5553370.

Almost surely, 2^22213474 is an apocalyptic number.

22213474 is a deficient number, since it is larger than the sum of its proper divisors (11106740).

22213474 is a wasteful number, since it uses less digits than its factorization.

22213474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11106739.

The product of its digits is 2688, while the sum is 25.

The square root of 22213474 is about 4713.1172274833. The cubic root of 22213474 is about 281.1073242431.

Adding to 22213474 its reverse (47431222), we get a palindrome (69644696).

The spelling of 22213474 in words is "twenty-two million, two hundred thirteen thousand, four hundred seventy-four".