22401222 has 8 divisors (see below), whose sum is σ = 44802456. Its totient is φ = 7467072.

The previous prime is 22401221. The next prime is 22401227. The reversal of 22401222 is 22210422.

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

22401222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1866763 + ... + 1866774.

It is an arithmetic number, because the mean of its divisors is an integer number (5600307).

Almost surely, 2^22401222 is an apocalyptic number.

22401222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22401222 is a wasteful number, since it uses less digits than its factorization.

22401222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3733542.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22401222 is about 4732.9929220315. The cubic root of 22401222 is about 281.8970752602.

Adding to 22401222 its reverse (22210422), we get a palindrome (44611644).

The spelling of 22401222 in words is "twenty-two million, four hundred one thousand, two hundred twenty-two".