2221105225 has 12 divisors (see below), whose sum is σ = 2899127440. Its totient is φ = 1683363600.

The previous prime is 2221105213. The next prime is 2221105231. The reversal of 2221105225 is 5225011222.

It is not a de Polignac number, because 2221105225 - 2²⁵ = 2187550793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221105196 and 2221105205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2337531 + ... + 2338480.

Almost surely, 2^2221105225 is an apocalyptic number.

2221105225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2221105225 is a deficient number, since it is larger than the sum of its proper divisors (678022215).

2221105225 is a wasteful number, since it uses less digits than its factorization.

2221105225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4676040 (or 4676035 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2221105225 is about 47128.6030452845. The cubic root of 2221105225 is about 1304.7371989315.

Adding to 2221105225 its reverse (5225011222), we get a palindrome (7446116447).

The spelling of 2221105225 in words is "two billion, two hundred twenty-one million, one hundred five thousand, two hundred twenty-five".