22221446 has 16 divisors (see below), whose sum is σ = 36487248. Its totient is φ = 10087200.

The previous prime is 22221391. The next prime is 22221449. The reversal of 22221446 is 64412222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5420 + ... + 8591.

It is an arithmetic number, because the mean of its divisors is an integer number (2280453).

Almost surely, 2^22221446 is an apocalyptic number.

22221446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22221446 is a deficient number, since it is larger than the sum of its proper divisors (14265802).

22221446 is a wasteful number, since it uses less digits than its factorization.

22221446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14087.

The product of its digits is 1536, while the sum is 23.

The square root of 22221446 is about 4713.9628763918. The cubic root of 22221446 is about 281.1409482732.

Adding to 22221446 its reverse (64412222), we get a palindrome (86633668).

The spelling of 22221446 in words is "twenty-two million, two hundred twenty-one thousand, four hundred forty-six".