10125221 has 4 divisors (see below), whose sum is σ = 10565472. Its totient is φ = 9684972.

The previous prime is 10125197. The next prime is 10125277. The reversal of 10125221 is 12252101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10125221 - 2²² = 5930917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10125196 and 10125205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10125721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220091 + ... + 220136.

It is an arithmetic number, because the mean of its divisors is an integer number (2641368).

Almost surely, 2^10125221 is an apocalyptic number.

It is an amenable number.

10125221 is a deficient number, since it is larger than the sum of its proper divisors (440251).

10125221 is an equidigital number, since it uses as much as digits as its factorization.

10125221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440250.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 10125221 is about 3182.0152419497. The cubic root of 10125221 is about 216.3390095453.

Adding to 10125221 its reverse (12252101), we get a palindrome (22377322).

The spelling of 10125221 in words is "ten million, one hundred twenty-five thousand, two hundred twenty-one".