1086221 has 8 divisors (see below), whose sum is σ = 1149120. Its totient is φ = 1024672.

The previous prime is 1086203. The next prime is 1086247. The reversal of 1086221 is 1226801.

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

It is a cyclic number.

It is not a de Polignac number, because 1086221 - 2¹⁰ = 1085197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1086193 and 1086202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086251) 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, 1625 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

2^1086221 is an apocalyptic number.

It is an amenable number.

1086221 is a deficient number, since it is larger than the sum of its proper divisors (62899).

1086221 is an equidigital number, since it uses as much as digits as its factorization.

1086221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1086221 is about 1042.2192667572. The cubic root of 1086221 is about 102.7951753251.

The spelling of 1086221 in words is "one million, eighty-six thousand, two hundred twenty-one".