22105312 has 24 divisors (see below), whose sum is σ = 43678656. Its totient is φ = 11012352.

The previous prime is 22105301. The next prime is 22105313. The reversal of 22105312 is 21350122.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22105313) 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, 8913 + ... + 11119.

It is an arithmetic number, because the mean of its divisors is an integer number (1819944).

Almost surely, 2^22105312 is an apocalyptic number.

It is an amenable number.

22105312 is a deficient number, since it is larger than the sum of its proper divisors (21573344).

22105312 is a wasteful number, since it uses less digits than its factorization.

22105312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530 (or 2522 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 22105312 is about 4701.6286539879. The cubic root of 22105312 is about 280.6503251269.

Adding to 22105312 its reverse (21350122), we get a palindrome (43455434).

The spelling of 22105312 in words is "twenty-two million, one hundred five thousand, three hundred twelve".