10221340 has 24 divisors (see below), whose sum is σ = 22206240. Its totient is φ = 3947328.

The previous prime is 10221293. The next prime is 10221347. The reversal of 10221340 is 4312201.

It is a self number, because there is not a number n which added to its sum of digits gives 10221340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221347) 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, 8232 + ... + 9391.

It is an arithmetic number, because the mean of its divisors is an integer number (925260).

Almost surely, 2^10221340 is an apocalyptic number.

10221340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221340 is an abundant number, since it is smaller than the sum of its proper divisors (11984900).

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

10221340 is a wasteful number, since it uses less digits than its factorization.

10221340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17661 (or 17659 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 10221340 is about 3197.0830455276. The cubic root of 10221340 is about 217.0214253941.

Adding to 10221340 its reverse (4312201), we get a palindrome (14533541).

The spelling of 10221340 in words is "ten million, two hundred twenty-one thousand, three hundred forty".