22211312 has 20 divisors (see below), whose sum is σ = 43367016. Its totient is φ = 11019840.

The previous prime is 22211279. The next prime is 22211327. The reversal of 22211312 is 21311222.

It is a happy number.

It is a super-2 number, since 2×22211312² = 986684761522688, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 3203 + ... + 7394.

Almost surely, 2^22211312 is an apocalyptic number.

It is an amenable number.

22211312 is a deficient number, since it is larger than the sum of its proper divisors (21155704).

22211312 is a wasteful number, since it uses less digits than its factorization.

22211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10736 (or 10730 counting only the distinct ones).

The product of its digits is 48, while the sum is 14.

The square root of 22211312 is about 4712.8878620226. The cubic root of 22211312 is about 281.0982040464.

Adding to 22211312 its reverse (21311222), we get a palindrome (43522534).

The spelling of 22211312 in words is "twenty-two million, two hundred eleven thousand, three hundred twelve".