10221750 has 192 divisors, whose sum is σ = 35043840. Its totient is φ = 2088000.

The previous prime is 10221737. The next prime is 10221767. The reversal of 10221750 is 5712201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 173221 + ... + 173279.

It is an arithmetic number, because the mean of its divisors is an integer number (182520).

Almost surely, 2^10221750 is an apocalyptic number.

10221750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10221750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17521920).

10221750 is an abundant number, since it is smaller than the sum of its proper divisors (24822090).

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

10221750 is a wasteful number, since it uses less digits than its factorization.

10221750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 10221750 is about 3197.1471658339. The cubic root of 10221750 is about 217.0243270878.

Adding to 10221750 its reverse (5712201), we get a palindrome (15933951).

It can be divided in two parts, 1022 and 1750, that added together give a palindrome (2772).

The spelling of 10221750 in words is "ten million, two hundred twenty-one thousand, seven hundred fifty".