22406222 has 4 divisors (see below), whose sum is σ = 33609336. Its totient is φ = 11203110.

The previous prime is 22406203. The next prime is 22406231. The reversal of 22406222 is 22260422.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 22406194 and 22406203.

It is a congruent number.

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, 5601554 + ... + 5601557.

It is an arithmetic number, because the mean of its divisors is an integer number (8402334).

Almost surely, 2^22406222 is an apocalyptic number.

22406222 is a deficient number, since it is larger than the sum of its proper divisors (11203114).

22406222 is a wasteful number, since it uses less digits than its factorization.

22406222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11203113.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22406222 is about 4733.5210995621. The cubic root of 22406222 is about 281.9180470406.

Adding to 22406222 its reverse (22260422), we get a palindrome (44666644).

The spelling of 22406222 in words is "twenty-two million, four hundred six thousand, two hundred twenty-two".