22001112 has 64 divisors (see below), whose sum is σ = 69849600. Its totient is φ = 6285600.

The previous prime is 22001101. The next prime is 22001113. The reversal of 22001112 is 21110022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 22001094 and 22001103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5764 + ... + 8787.

It is an arithmetic number, because the mean of its divisors is an integer number (1091400).

Almost surely, 2^22001112 is an apocalyptic number.

It is an amenable number.

22001112 is an abundant number, since it is smaller than the sum of its proper divisors (47848488).

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

22001112 is a wasteful number, since it uses less digits than its factorization.

22001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14573 (or 14563 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 22001112 is about 4690.5342979239. The cubic root of 22001112 is about 280.2086539977.

Adding to 22001112 its reverse (21110022), we get a palindrome (43111134).

The spelling of 22001112 in words is "twenty-two million, one thousand, one hundred twelve".