10221435 has 48 divisors (see below), whose sum is σ = 20819136. Its totient is φ = 4541184.

The previous prime is 10221397. The next prime is 10221443. The reversal of 10221435 is 53412201.

10221435 is a `hidden beast` number, since 10 + 221 + 435 = 666.

It is not a de Polignac number, because 10221435 - 2⁶ = 10221371 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11217 + ... + 12093.

It is an arithmetic number, because the mean of its divisors is an integer number (433732).

Almost surely, 2^10221435 is an apocalyptic number.

10221435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10221435 is an abundant number, since it is smaller than the sum of its proper divisors (10597701).

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

10221435 is a wasteful number, since it uses less digits than its factorization.

10221435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 929 counting only the distinct ones).

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

The square root of 10221435 is about 3197.0979027862. The cubic root of 10221435 is about 217.0220977447.

Adding to 10221435 its reverse (53412201), we get a palindrome (63633636).

It can be divided in two parts, 10 and 221435, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 10221435 in words is "ten million, two hundred twenty-one thousand, four hundred thirty-five".