10121500 has 48 divisors (see below), whose sum is σ = 22853376. Its totient is φ = 3912000.

The previous prime is 10121491. The next prime is 10121521. The reversal of 10121500 is 512101.

It is a happy number.

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

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 15174 + ... + 15826.

It is an arithmetic number, because the mean of its divisors is an integer number (476112).

Almost surely, 2^10121500 is an apocalyptic number.

10121500 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 10121500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11426688).

10121500 is an abundant number, since it is smaller than the sum of its proper divisors (12731876).

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

10121500 is a wasteful number, since it uses less digits than its factorization.

10121500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 691 counting only the distinct ones).

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

The square root of 10121500 is about 3181.4304958619. The cubic root of 10121500 is about 216.3125049029.

Adding to 10121500 its reverse (512101), we get a palindrome (10633601).

The spelling of 10121500 in words is "ten million, one hundred twenty-one thousand, five hundred".