22021105 has 8 divisors (see below), whose sum is σ = 27139752. Its totient is φ = 17140608.

The previous prime is 22021093. The next prime is 22021123. The reversal of 22021105 is 50112022.

It can be written as a sum of positive squares in 4 ways, for example, as 7573504 + 14447601 = 2752^2 + 3801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22021105 - 2¹¹ = 22019057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59332 + ... + 59701.

It is an arithmetic number, because the mean of its divisors is an integer number (3392469).

Almost surely, 2^22021105 is an apocalyptic number.

It is an amenable number.

22021105 is a deficient number, since it is larger than the sum of its proper divisors (5118647).

22021105 is a wasteful number, since it uses less digits than its factorization.

22021105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119075.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 22021105 is about 4692.6650210728. The cubic root of 22021105 is about 280.2935060045.

Adding to 22021105 its reverse (50112022), we get a palindrome (72133127).

The spelling of 22021105 in words is "twenty-two million, twenty-one thousand, one hundred five".