22220422 has 24 divisors (see below), whose sum is σ = 39681576. Its totient is φ = 9299808.

The previous prime is 22220417. The next prime is 22220431. The reversal of 22220422 is 22402222.

It is a junction number, because it is equal to n+sod(n) for n = 22220396 and 22220405.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1578 + ... + 6850.

It is an arithmetic number, because the mean of its divisors is an integer number (1653399).

Almost surely, 2^22220422 is an apocalyptic number.

22220422 is a deficient number, since it is larger than the sum of its proper divisors (17461154).

22220422 is a wasteful number, since it uses less digits than its factorization.

22220422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5332 (or 5325 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22220422 is about 4713.8542616420. The cubic root of 22220422 is about 281.1366297311.

Adding to 22220422 its reverse (22402222), we get a palindrome (44622644).

The spelling of 22220422 in words is "twenty-two million, two hundred twenty thousand, four hundred twenty-two".