22212105 has 16 divisors (see below), whose sum is σ = 35649600. Its totient is φ = 11809728.

The previous prime is 22212101. The next prime is 22212107. The reversal of 22212105 is 50121222.

It is not a de Polignac number, because 22212105 - 2² = 22212101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (22212101) 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, 3114 + ... + 7356.

It is an arithmetic number, because the mean of its divisors is an integer number (2228100).

Almost surely, 2^22212105 is an apocalyptic number.

It is an amenable number.

22212105 is a deficient number, since it is larger than the sum of its proper divisors (13437495).

22212105 is a wasteful number, since it uses less digits than its factorization.

22212105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22212105 is about 4712.9719922783. The cubic root of 22212105 is about 281.1015493122.

Adding to 22212105 its reverse (50121222), we get a palindrome (72333327).

The spelling of 22212105 in words is "twenty-two million, two hundred twelve thousand, one hundred five".