220111244125 has 8 divisors (see below), whose sum is σ = 274698832824. Its totient is φ = 176088995200.

The previous prime is 220111244069. The next prime is 220111244141. The reversal of 220111244125 is 521442111022.

It can be written as a sum of positive squares in 4 ways, for example, as 2771601316 + 217339642809 = 52646^2 + 466197^2 .

It is not a de Polignac number, because 220111244125 - 2⁷ = 220111243997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220111244125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880444852 + ... + 880445101.

It is an arithmetic number, because the mean of its divisors is an integer number (34337354103).

Almost surely, 2^220111244125 is an apocalyptic number.

220111244125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220111244125 is a deficient number, since it is larger than the sum of its proper divisors (54587588699).

220111244125 is an equidigital number, since it uses as much as digits as its factorization.

220111244125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760889968 (or 1760889958 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 220111244125 its reverse (521442111022), we get a palindrome (741553355147).

The spelling of 220111244125 in words is "two hundred twenty billion, one hundred eleven million, two hundred forty-four thousand, one hundred twenty-five".