10372221 has 12 divisors (see below), whose sum is σ = 15348060. Its totient is φ = 6745920.

The previous prime is 10372213. The next prime is 10372223. The reversal of 10372221 is 12227301.

10372221 = T₈₆₃ + T₈₆₄ + ... + T₈₈₉.

It can be written as a sum of positive squares in 2 ways, for example, as 202500 + 10169721 = 450^2 + 3189^2 .

It is not a de Polignac number, because 10372221 - 2³ = 10372213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10372194 and 10372203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10372223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13686 + ... + 14423.

It is an arithmetic number, because the mean of its divisors is an integer number (1279005).

Almost surely, 2^10372221 is an apocalyptic number.

It is an amenable number.

10372221 is a deficient number, since it is larger than the sum of its proper divisors (4975839).

10372221 is a wasteful number, since it uses less digits than its factorization.

10372221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28156 (or 28153 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 10372221 is about 3220.5932683281. The cubic root of 10372221 is about 218.0840584291.

Adding to 10372221 its reverse (12227301), we get a palindrome (22599522).

The spelling of 10372221 in words is "ten million, three hundred seventy-two thousand, two hundred twenty-one".