11012500 has 36 divisors (see below), whose sum is σ = 24115644. Its totient is φ = 4400000.

The previous prime is 11012479. The next prime is 11012501. The reversal of 11012500 is 521011.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 10316944 + 695556 = 3212^2 + 834^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12060 + ... + 12940.

It is an arithmetic number, because the mean of its divisors is an integer number (669879).

Almost surely, 2^11012500 is an apocalyptic number.

11012500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11012500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12057822).

11012500 is an abundant number, since it is smaller than the sum of its proper divisors (13103144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11012500 is an frugal number, since it uses more digits than its factorization.

11012500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 11012500 is about 3318.5087012090. The cubic root of 11012500 is about 222.4822188374.

Adding to 11012500 its reverse (521011), we get a palindrome (11533511).

The spelling of 11012500 in words is "eleven million, twelve thousand, five hundred".