2221123105 has 8 divisors (see below), whose sum is σ = 2675483712. Its totient is φ = 1770141168.

The previous prime is 2221123081. The next prime is 2221123109. The reversal of 2221123105 is 5013211222.

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 2221123105 - 2⁷ = 2221122977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221123109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843219 + ... + 845848.

It is an arithmetic number, because the mean of its divisors is an integer number (334435464).

Almost surely, 2^2221123105 is an apocalyptic number.

It is an amenable number.

2221123105 is a deficient number, since it is larger than the sum of its proper divisors (454360607).

2221123105 is a wasteful number, since it uses less digits than its factorization.

2221123105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689335.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2221123105 is about 47128.7927386221. The cubic root of 2221123105 is about 1304.7406999871.

Adding to 2221123105 its reverse (5013211222), we get a palindrome (7234334327).

The spelling of 2221123105 in words is "two billion, two hundred twenty-one million, one hundred twenty-three thousand, one hundred five".