22100444225 has 24 divisors (see below), whose sum is σ = 29550504480. Its totient is φ = 16341264000.

The previous prime is 22100444167. The next prime is 22100444297. The reversal of 22100444225 is 52244400122.

It is not a de Polignac number, because 22100444225 - 2⁸ = 22100443969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22100444194 and 22100444203.

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 23 ways as a sum of consecutive naturals, for example, 547931 + ... + 586880.

It is an arithmetic number, because the mean of its divisors is an integer number (1231271020).

Almost surely, 2^22100444225 is an apocalyptic number.

22100444225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22100444225 is a deficient number, since it is larger than the sum of its proper divisors (7450060255).

22100444225 is a wasteful number, since it uses less digits than its factorization.

22100444225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134881 (or 1134876 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 22100444225 its reverse (52244400122), we get a palindrome (74344844347).

The spelling of 22100444225 in words is "twenty-two billion, one hundred million, four hundred forty-four thousand, two hundred twenty-five".