10684221 has 4 divisors (see below), whose sum is σ = 14245632. Its totient is φ = 7122812.

The previous prime is 10684189. The next prime is 10684237. The reversal of 10684221 is 12248601.

10684221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10684221 - 2⁵ = 10684189 is a prime.

It is a super-2 number, since 2×10684221² = 228305156753682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10684191 and 10684200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10684291) 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, 1780701 + ... + 1780706.

It is an arithmetic number, because the mean of its divisors is an integer number (3561408).

Almost surely, 2^10684221 is an apocalyptic number.

It is an amenable number.

10684221 is a deficient number, since it is larger than the sum of its proper divisors (3561411).

10684221 is an equidigital number, since it uses as much as digits as its factorization.

10684221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561410.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 10684221 is about 3268.6726663892. The cubic root of 10684221 is about 220.2491736005.

The spelling of 10684221 in words is "ten million, six hundred eighty-four thousand, two hundred twenty-one".