10315221 has 8 divisors (see below), whose sum is σ = 15718464. Its totient is φ = 5894400.

The previous prime is 10315211. The next prime is 10315223. The reversal of 10315221 is 12251301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10315221 - 2⁹ = 10314709 is a prime.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 10315221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10315223) 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, 245580 + ... + 245621.

It is an arithmetic number, because the mean of its divisors is an integer number (1964808).

Almost surely, 2^10315221 is an apocalyptic number.

It is an amenable number.

10315221 is a deficient number, since it is larger than the sum of its proper divisors (5403243).

10315221 is an equidigital number, since it uses as much as digits as its factorization.

10315221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491211.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 10315221 is about 3211.7317758493. The cubic root of 10315221 is about 217.6838345353.

Adding to 10315221 its reverse (12251301), we get a palindrome (22566522).

The spelling of 10315221 in words is "ten million, three hundred fifteen thousand, two hundred twenty-one".