10255221 has 16 divisors (see below), whose sum is σ = 15422400. Its totient is φ = 6733584.

The previous prime is 10255211. The next prime is 10255243. The reversal of 10255221 is 12255201.

It is not a de Polignac number, because 10255221 - 2⁷ = 10255093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10255194 and 10255203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10255211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026 + ... + 4643.

It is an arithmetic number, because the mean of its divisors is an integer number (963900).

Almost surely, 2^10255221 is an apocalyptic number.

It is an amenable number.

10255221 is a deficient number, since it is larger than the sum of its proper divisors (5167179).

10255221 is an equidigital number, since it uses as much as digits as its factorization.

10255221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745 (or 5739 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 10255221 is about 3202.3773981216. The cubic root of 10255221 is about 217.2609502034.

The spelling of 10255221 in words is "ten million, two hundred fifty-five thousand, two hundred twenty-one".