11220531125 has 8 divisors (see below), whose sum is σ = 14003223000. Its totient is φ = 8976424800.

The previous prime is 11220531121. The next prime is 11220531181. The reversal of 11220531125 is 52113502211.

It can be written as a sum of positive squares in 4 ways, for example, as 622652209 + 10597878916 = 24953^2 + 102946^2 .

It is not a de Polignac number, because 11220531125 - 2² = 11220531121 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11220531125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220531121) 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, 44882000 + ... + 44882249.

It is an arithmetic number, because the mean of its divisors is an integer number (1750402875).

Almost surely, 2^11220531125 is an apocalyptic number.

It is an amenable number.

11220531125 is a deficient number, since it is larger than the sum of its proper divisors (2782691875).

11220531125 is an frugal number, since it uses more digits than its factorization.

11220531125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89764264 (or 89764254 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 11220531125 in words is "eleven billion, two hundred twenty million, five hundred thirty-one thousand, one hundred twenty-five".