10221354 has 108 divisors (see below), whose sum is σ = 27667458. Its totient is φ = 2708640.

The previous prime is 10221353. The next prime is 10221371. The reversal of 10221354 is 45312201.

It can be written as a sum of positive squares in only one way, i.e., 9828225 + 393129 = 3135^2 + 627^2 .

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

It is not an unprimeable number, because it can be changed into a prime (10221353) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 537957 + ... + 537975.

Almost surely, 2^10221354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10221354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13833729).

10221354 is an abundant number, since it is smaller than the sum of its proper divisors (17446104).

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

10221354 is a wasteful number, since it uses less digits than its factorization.

10221354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 10221354 is about 3197.0852350227. The cubic root of 10221354 is about 217.0215244776.

Adding to 10221354 its reverse (45312201), we get a palindrome (55533555).

The spelling of 10221354 in words is "ten million, two hundred twenty-one thousand, three hundred fifty-four".