22001222 has 8 divisors (see below), whose sum is σ = 33031272. Its totient is φ = 10990800.

The previous prime is 22001209. The next prime is 22001237. The reversal of 22001222 is 22210022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679 + ... + 6842.

It is an arithmetic number, because the mean of its divisors is an integer number (4128909).

Almost surely, 2^22001222 is an apocalyptic number.

22001222 is a deficient number, since it is larger than the sum of its proper divisors (11030050).

22001222 is a wasteful number, since it uses less digits than its factorization.

22001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9814.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22001222 is about 4690.5460236523. The cubic root of 22001222 is about 280.2091209878.

Adding to 22001222 its reverse (22210022), we get a palindrome (44211244).

The spelling of 22001222 in words is "twenty-two million, one thousand, two hundred twenty-two".